Ontology of units of Measure (OM)
type: Ontology
version info: 2.0.12
comment: The Ontology of units of Measure (OM) 2.0 models concepts and relations important to scientific research. It has a strong focus on units, quantities, measurements, and dimensions.
license: https://creativecommons.org/licenses/by/4.0/
date: 2019/03/08
creator: Hajo Rijgersberg, Don Willems, Jan Top
comment: Submodule of the Ontology of units of Measure (OM)

LaTeX command
type: AnnotationProperty
alternative label: typeset by LaTeX command
comment: OMLaTeX command that can be used to render this quantity or unit.

LaTeX symbol
type: AnnotationProperty
alternative label: LaTeX formatted symbol
alternative label: has LaTeX symbol
comment: OMLaTeX formatted symbol may include commands such as \unit and \E as defined in OMLaTeX.

abbreviation
type: AnnotationProperty
alternative label: has abbreviation

alternative LaTeX symbol
type: AnnotationProperty
alternative label: alternative LaTeX formatted symbol
alternative label: has alternative LaTeX symbol
comment: An alternative OMLaTeX formatted symbol, which may include commands such as \unit and \E as defined in OMLaTeX.

alternative label
type: AnnotationProperty

alternative symbol
type: AnnotationProperty
alternative label: has alternative symbol

longcomment
type: AnnotationProperty
alternative label: has longcomment
alternative label: long comment

symbol
type: AnnotationProperty
alternative label: has symbol

unofficial abbreviation
type: AnnotationProperty
alternative label: has unofficial abbreviation
comment: Used to specify abbreviations that are used in e.g. every day speech but are not defined in any standard.
sub property of: hiddenLabel

unofficial label
type: AnnotationProperty
alternative label: has unofficial label
comment: Used to specify labels that are used in e.g. every day speech but are not defined in any standard.
sub property of: hiddenLabel

commonly has unit
type: ObjectProperty
domain: quantity
range: unit
alternative label: commonly has unit of measure
comment: This property indicates a commonly-used unit.

has base
type: ObjectProperty
domain: unit exponentiation
range: unit

has base quantity
type: ObjectProperty
domain: system of units
range: quantity

has base unit
type: ObjectProperty
domain: system of units
range: unit

has denominator
type: ObjectProperty
domain: unit division
range: unit

has derived quantity
type: ObjectProperty
domain: system of units
range: quantity

has derived unit
type: ObjectProperty
domain: system of units
range: unit

has dimension
type: ObjectProperty
domain: Class
  union of: quantity
  union of: scale
  union of: unit
range: dimension

has numerator
type: ObjectProperty
domain: unit division
range: unit

has phenomenon
type: ObjectProperty
domain: quantity

has prefix
type: ObjectProperty
type: FunctionalProperty
domain: prefixed unit
range: prefix

has quantity
type: ObjectProperty
sub property of: has prefix
domain: singular unit
range: quantity

has scale
type: ObjectProperty
domain: Class
  union of: quantity
  union of: scale
range: scale

has term 1
type: ObjectProperty
domain: unit multiplication
range: unit

has term 2
type: ObjectProperty
domain: unit multiplication
range: unit

has unit
type: ObjectProperty
domain: Class
  union of: interval scale
  union of: measure
  union of: prefixed unit
  union of: ratio scale
  union of: singular unit
range: unit

has value
type: ObjectProperty
domain: quantity
range: measure

has exponent
type: DatatypeProperty
domain: unit exponentiation
range: integer

has factor
type: DatatypeProperty
type: FunctionalProperty
domain: Class
  union of: prefix
  union of: scale
  union of: singular unit
range: float

has numerical value
type: DatatypeProperty
domain: measure

has off-set
type: DatatypeProperty
domain: scale
range: float

has SI amount of substance dimension exponent
type: DatatypeProperty
domain: dimension
range: integer

has SI electric current dimension exponent
type: DatatypeProperty
domain: dimension
range: integer

has SI length dimension exponent
type: DatatypeProperty
domain: dimension
range: integer

has SI luminous intensity dimension exponent
type: DatatypeProperty
domain: dimension
range: integer

has SI mass dimension exponent
type: DatatypeProperty
domain: dimension
range: integer

has SI thermodynamic temperature dimension exponent
type: DatatypeProperty
domain: dimension
range: integer

has SI time dimension exponent
type: DatatypeProperty
domain: dimension
range: integer

amount of money
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: amount of money unit
type: NamedIndividual
commonly has unit: Australian dollar
commonly has unit: Brazilian real
commonly has unit: Canadian dollar
commonly has unit: Chinese yuan
commonly has unit: Hong Kong dollar
commonly has unit: Indian rupee
commonly has unit: Japanese yen
commonly has unit: Mexican peso
commonly has unit: New Zealand dollar
commonly has unit: Norwegian krone
commonly has unit: RussianRuble
commonly has unit: Singapore dollar
commonly has unit: South African rand
commonly has unit: South Korean won
commonly has unit: Swedish krona
commonly has unit: Swiss franc
commonly has unit: Turkish lira
commonly has unit: United States dollar
commonly has unit: euro
commonly has unit: megaeuro
commonly has unit: pound sterling

amount of money unit
type: Class
equivalent class: Class
  one of: Australian dollar
  one of: Brazilian real
  one of: Canadian dollar
  one of: Chinese yuan
  one of: Hong Kong dollar
  one of: Indian rupee
  one of: Japanese yen
  one of: Mexican peso
  one of: New Zealand dollar
  one of: Norwegian krone
  one of: RussianRuble
  one of: Singapore dollar
  one of: South African rand
  one of: South Korean won
  one of: Swedish krona
  one of: Swiss franc
  one of: Turkish lira
  one of: United States dollar
  one of: euro
  one of: megaeuro
  one of: pound sterling
subclass of: unit

angular speed
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: angular speed unit
subclass of: Restriction
  on property: has dimension
  has value: angular speed dimension
type: NamedIndividual
commonly has unit: millisecond (angle) per year
commonly has unit: radian per second
label: hoeksnelheid @nl
alternative symbol: Ω
alternative label: hoekfrequentie @nl
alternative label: angular frequency
symbol: ω

angular speed unit
type: Class
equivalent class: Class
  one of: millisecond (angle) per year
  one of: radian per second
subclass of: unit

angular velocity
type: Class
subclass of: angular speed
type: NamedIndividual
commonly has unit: radian per second
symbol: ω

area
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: area unit
subclass of: Restriction
  on property: has dimension
  has value: area dimension
type: NamedIndividual
commonly has unit: acre (international)
commonly has unit: acre (US survey)
commonly has unit: are
commonly has unit: barn
commonly has unit: circular mil
commonly has unit: square centimetre
commonly has unit: square kilometre
commonly has unit: square metre
commonly has unit: square millimetre
symbol: A
label: oppervlakte @nl
label: 面积 @zh
comment: Area expresses the two-dimensional size of a defined part of a surface, typically a region bounded by a closed curve. It is a derived quantity in the International System of Units. Area is length squared.
alternative symbol: S
alternative label: oppervlak @nl

area unit
type: Class
equivalent class: Class
  union of: prefixed are
  union of: square prefixed metre
  union of: Class
    one of: acre (international)
    one of: acre (US survey)
    one of: are
    one of: barn
    one of: circular mil
    one of: square metre
subclass of: unit

body mass
type: Class
subclass of: mass
type: NamedIndividual
commonly has unit: gram
commonly has unit: kilogram
commonly has unit: tonne
unofficial label: body weight

capacitance
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: capacitance unit
subclass of: Restriction
  on property: has dimension
  has value: capacitance dimension
type: NamedIndividual
commonly has unit: abfarad
commonly has unit: coulomb per volt
commonly has unit: farad
commonly has unit: statfarad
comment: Capacitance is the ability to hold electrical charge. It is a derived quantity in the International System of Units. Capacitance is electric charge divided by electric potential.
label: capaciteit @nl
symbol: C
alternative label: electric capacitance
alternative label: electrische capaciteit @nl

capacitance unit
type: Class
equivalent class: Class
  union of: prefixed farad
  union of: Class
    one of: abfarad
    one of: coulomb per volt
    one of: farad
    one of: statfarad
subclass of: unit

Celsius temperature
type: Class
subclass of: temperature
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: Class
      union of: Celsius temperature scale
      union of: Celsius temperature unit
subclass of: Restriction
  on property: has scale
  has value: Celsius scale
type: NamedIndividual
commonly has unit: degree Celsius
symbol: t
alternative symbol: θ
label: Celsiustemperatuur @nl

Celsius temperature scale
type: Class
subclass of: scale

Celsius temperature unit
type: Class
equivalent class: Class
  union of: prefixed degree Celsius
  union of: Class
    one of: degree Celsius
subclass of: temperature unit

compound unit
type: Class
subclass of: unit

compressive stress
type: Class
subclass of: stress
type: NamedIndividual
commonly has unit: atmosphere (standard)
commonly has unit: atmosphere (technical)
commonly has unit: bar
commonly has unit: barye
commonly has unit: centimetre of mercury
commonly has unit: decibar
commonly has unit: metre of mercury
commonly has unit: microbar
commonly has unit: millibar
commonly has unit: millimetre of mercury
commonly has unit: newton per square metre
commonly has unit: pascal
commonly has unit: torr
comment: Compressive stress is a stress that, when applied, acts towards the center of a material.

cost
type: Class
subclass of: amount of money
type: NamedIndividual
commonly has unit: Australian dollar
commonly has unit: Brazilian real
commonly has unit: Canadian dollar
commonly has unit: Chinese yuan
commonly has unit: Hong Kong dollar
commonly has unit: Indian rupee
commonly has unit: Japanese yen
commonly has unit: Mexican peso
commonly has unit: New Zealand dollar
commonly has unit: Norwegian krone
commonly has unit: RussianRuble
commonly has unit: Singapore dollar
commonly has unit: South African rand
commonly has unit: South Korean won
commonly has unit: Swedish krona
commonly has unit: Swiss franc
commonly has unit: Turkish lira
commonly has unit: United States dollar
commonly has unit: euro
commonly has unit: megaeuro
commonly has unit: pound sterling

cubic prefixed metre
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has base
    all values from: prefixed metre
  intersection of: Restriction
    on property: has base
    cardinality: 1
  intersection of: Restriction
    on property: has exponent
    has value: 3
  intersection of: Restriction
    on property: has exponent
    cardinality: 1
subclass of: unit exponentiation

date
type: Class
subclass of: time
type: NamedIndividual
commonly has unit: day
commonly has unit: hour
commonly has unit: microsecond
commonly has unit: millisecond
commonly has unit: minute
commonly has unit: second
commonly has unit: year
label: datum @nl

depth
type: Class
subclass of: length
type: NamedIndividual
commonly has unit: ångström
commonly has unit: astronomical unit
commonly has unit: centimetre
commonly has unit: chain
commonly has unit: cicero
commonly has unit: decimetre
commonly has unit: fathom (US survey)
commonly has unit: fermi
commonly has unit: foot (international)
commonly has unit: foot (US survey)
commonly has unit: furlong (international)
commonly has unit: gigaparsec
commonly has unit: inch (international)
commonly has unit: kilometre
commonly has unit: kiloparsec
commonly has unit: light year
commonly has unit: megaparsec
commonly has unit: metre
commonly has unit: micrometre
commonly has unit: micron
commonly has unit: mil (length)
commonly has unit: mile (statute)
commonly has unit: mile (US survey)
commonly has unit: millimetre
commonly has unit: nautical mile (international)
commonly has unit: parsec
commonly has unit: pica (ATA)
commonly has unit: pica (Postscript)
commonly has unit: pica (TeX)
commonly has unit: point (ATA)
commonly has unit: point (Didot)
commonly has unit: point (Postscript)
commonly has unit: point (TeX)
commonly has unit: rod (US)
commonly has unit: solar radius
commonly has unit: yard (international)
symbol: d
label: diepte @nl

diameter
type: Class
subclass of: length
type: NamedIndividual
commonly has unit: ångström
commonly has unit: astronomical unit
commonly has unit: centimetre
commonly has unit: chain
commonly has unit: cicero
commonly has unit: decimetre
commonly has unit: fathom (US survey)
commonly has unit: fermi
commonly has unit: foot (international)
commonly has unit: foot (US survey)
commonly has unit: furlong (international)
commonly has unit: gigaparsec
commonly has unit: inch (international)
commonly has unit: kilometre
commonly has unit: kiloparsec
commonly has unit: light year
commonly has unit: megaparsec
commonly has unit: metre
commonly has unit: micrometre
commonly has unit: micron
commonly has unit: mil (length)
commonly has unit: mile (statute)
commonly has unit: mile (US survey)
commonly has unit: millimetre
commonly has unit: nautical mile (international)
commonly has unit: parsec
commonly has unit: pica (ATA)
commonly has unit: pica (Postscript)
commonly has unit: pica (TeX)
commonly has unit: point (ATA)
commonly has unit: point (Didot)
commonly has unit: point (Postscript)
commonly has unit: point (TeX)
commonly has unit: rod (US)
commonly has unit: solar radius
commonly has unit: yard (international)
label: 直径 @zh
symbol: d

dimension
type: Class
comment: Dimensions are abstract properties of units and quantities neglecting their vectorial or tensorial character and all numerical factors including their sign.

distance
type: Class
subclass of: length
type: NamedIndividual
commonly has unit: ångström
commonly has unit: astronomical unit
commonly has unit: centimetre
commonly has unit: chain
commonly has unit: cicero
commonly has unit: decimetre
commonly has unit: fathom (US survey)
commonly has unit: fermi
commonly has unit: foot (international)
commonly has unit: foot (US survey)
commonly has unit: furlong (international)
commonly has unit: gigaparsec
commonly has unit: inch (international)
commonly has unit: kilometre
commonly has unit: kiloparsec
commonly has unit: light year
commonly has unit: megaparsec
commonly has unit: metre
commonly has unit: micrometre
commonly has unit: micron
commonly has unit: mil (length)
commonly has unit: mile (statute)
commonly has unit: mile (US survey)
commonly has unit: millimetre
commonly has unit: nautical mile (international)
commonly has unit: parsec
commonly has unit: pica (ATA)
commonly has unit: pica (Postscript)
commonly has unit: pica (TeX)
commonly has unit: point (ATA)
commonly has unit: point (Didot)
commonly has unit: point (Postscript)
commonly has unit: point (TeX)
commonly has unit: rod (US)
commonly has unit: solar radius
commonly has unit: yard (international)
symbol: d
label: afstand @nl
label: 距离 @zh

duration
type: Class
subclass of: time
type: NamedIndividual
commonly has unit: day
commonly has unit: hour
commonly has unit: microsecond
commonly has unit: millisecond
commonly has unit: minute
commonly has unit: second
commonly has unit: year
label: duur @nl

dynamic viscosity
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: dynamic viscosity unit
subclass of: Restriction
  on property: has dimension
  has value: dynamic viscosity dimension
type: NamedIndividual
commonly has unit: pascal second
label: dynamische viscositeit @nl
alternative symbol: η
symbol: μ
comment: Viscosity is the definite resistance to change of form of many materials.
unofficial label: viscosity

dynamic viscosity unit
type: Class
equivalent class: Class
  one of: pascal second
subclass of: unit

electric current
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: electric current unit
subclass of: Restriction
  on property: has dimension
  has value: electric current dimension
type: NamedIndividual
commonly has unit: abampere
commonly has unit: ampere
commonly has unit: biot
commonly has unit: microampere
commonly has unit: milliampere
commonly has unit: statampere
symbol: I
comment: Electric current is the flow of electric charge. It is a base quantity in the International System of Units. Electric current is electric charge divided by time.
alternative symbol: i
alternative label: current

electric current unit
type: Class
equivalent class: Class
  union of: prefixed ampere
  union of: Class
    one of: abampere
    one of: ampere
    one of: biot
    one of: statampere
subclass of: unit

electric potential
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: electric potential unit
subclass of: Restriction
  on property: has dimension
  has value: electric potential dimension
type: NamedIndividual
commonly has unit: abvolt
commonly has unit: decavolt
commonly has unit: millivolt
commonly has unit: statvolt
commonly has unit: volt
commonly has unit: watt per ampere
alternative label: voltage
label: electrische potentiaal @nl
comment: Electric potential is the potential energy per unit charge associated with static (time-invariant) electric field.
symbol: V
alternative symbol: φ

electric potential unit
type: Class
equivalent class: Class
  union of: prefixed volt
  union of: Class
    one of: abvolt
    one of: statvolt
    one of: volt
    one of: watt per ampere
subclass of: unit

electrical resistance
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: electrical resistance unit
subclass of: Restriction
  on property: has dimension
  has value: electrical resistance dimension
type: NamedIndividual
commonly has unit: abohm
commonly has unit: kilohm
commonly has unit: ohm
commonly has unit: statohm
commonly has unit: volt per ampere
comment: Electrical resistance is the degree to which an object opposes an electric current through it. It is a derived quantity in the International System of Units. Electrical resistance is electric potential divided by electric current.
alternative label: resistance
alternative label: electric resistance
symbol: R

electrical resistance unit
type: Class
equivalent class: Class
  union of: prefixed ohm
  union of: Class
    one of: abohm
    one of: ohm
    one of: statohm
    one of: volt per ampere
subclass of: unit

epoch
type: Class
subclass of: date
type: NamedIndividual
commonly has unit: second
commonly has unit: year

Fahrenheit temperature
type: Class
subclass of: temperature
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: Class
      union of: Fahrenheit temperature scale
      union of: Fahrenheit temperature unit
subclass of: Restriction
  on property: has scale
  has value: Fahrenheit scale
type: NamedIndividual
commonly has unit: degree Fahrenheit
label: Fahrenheittemperatuur @nl
symbol: T

Fahrenheit temperature scale
type: Class
subclass of: scale

Fahrenheit temperature unit
type: Class
equivalent class: Class
  union of: Class
    one of: degree Fahrenheit
subclass of: temperature unit

frequency
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: frequency unit
subclass of: Restriction
  on property: has dimension
  has value: frequency dimension
type: NamedIndividual
commonly has unit: hertz
commonly has unit: kilohertz
commonly has unit: megahertz
commonly has unit: millihertz
comment: Frequency is a measure of the number of occurrences of a repeating event per unit time.
unofficial abbreviation: freq
label: 频率 @zh
alternative symbol: ν
symbol: f
label: frequentie @nl

frequency unit
type: Class
subclass of: unit

height
type: Class
subclass of: length
type: NamedIndividual
commonly has unit: ångström
commonly has unit: astronomical unit
commonly has unit: centimetre
commonly has unit: chain
commonly has unit: cicero
commonly has unit: decimetre
commonly has unit: fathom (US survey)
commonly has unit: fermi
commonly has unit: foot (international)
commonly has unit: foot (US survey)
commonly has unit: furlong (international)
commonly has unit: gigaparsec
commonly has unit: inch (international)
commonly has unit: kilometre
commonly has unit: kiloparsec
commonly has unit: light year
commonly has unit: megaparsec
commonly has unit: metre
commonly has unit: micrometre
commonly has unit: micron
commonly has unit: mil (length)
commonly has unit: mile (statute)
commonly has unit: mile (US survey)
commonly has unit: millimetre
commonly has unit: nautical mile (international)
commonly has unit: parsec
commonly has unit: pica (ATA)
commonly has unit: pica (Postscript)
commonly has unit: pica (TeX)
commonly has unit: point (ATA)
commonly has unit: point (Didot)
commonly has unit: point (Postscript)
commonly has unit: point (TeX)
commonly has unit: rod (US)
commonly has unit: solar radius
commonly has unit: yard (international)
symbol: h
label: hoogte @nl

interval scale
type: Class
subclass of: scale

length
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: length unit
subclass of: Restriction
  on property: has dimension
  has value: length dimension
type: NamedIndividual
commonly has unit: ångström
commonly has unit: astronomical unit
commonly has unit: centimetre
commonly has unit: chain
commonly has unit: cicero
commonly has unit: decimetre
commonly has unit: fathom (US survey)
commonly has unit: fermi
commonly has unit: foot (international)
commonly has unit: foot (US survey)
commonly has unit: furlong (international)
commonly has unit: gigaparsec
commonly has unit: inch (international)
commonly has unit: kilometre
commonly has unit: kiloparsec
commonly has unit: light year
commonly has unit: megaparsec
commonly has unit: metre
commonly has unit: micrometre
commonly has unit: micron
commonly has unit: mil (length)
commonly has unit: mile (statute)
commonly has unit: mile (US survey)
commonly has unit: millimetre
commonly has unit: nautical mile (international)
commonly has unit: parsec
commonly has unit: pica (ATA)
commonly has unit: pica (Postscript)
commonly has unit: pica (TeX)
commonly has unit: point (ATA)
commonly has unit: point (Didot)
commonly has unit: point (Postscript)
commonly has unit: point (TeX)
commonly has unit: rod (US)
commonly has unit: solar radius
commonly has unit: yard (international)
comment: Length is the amount of space between two geographical points along a curve. It is a base quantity in the International System of Units and other systems of units. Length is speed times time. The metre, a base unit of length in the International System of Units, is defined in terms of speed of light during a certain time interval.
symbol: l
label: 长度 @zh
alternative symbol: L
label: lengte @nl

length unit
type: Class
equivalent class: Class
  union of: prefixed metre
  union of: Class
    one of: ångström
    one of: astronomical unit
    one of: chain
    one of: cicero
    one of: fathom (US survey)
    one of: fermi
    one of: foot (international)
    one of: foot (US survey)
    one of: furlong (international)
    one of: gigaparsec
    one of: inch (international)
    one of: kiloparsec
    one of: light year
    one of: megaparsec
    one of: metre
    one of: micron
    one of: mil (length)
    one of: mile (statute)
    one of: mile (US survey)
    one of: nautical mile (international)
    one of: parsec
    one of: pica (ATA)
    one of: pica (Postscript)
    one of: pica (TeX)
    one of: point (ATA)
    one of: point (Didot)
    one of: point (Postscript)
    one of: point (TeX)
    one of: rod (US)
    one of: solar radius
    one of: yard (international)
subclass of: unit

mass
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: mass unit
subclass of: Restriction
  on property: has dimension
  has value: mass dimension
type: NamedIndividual
commonly has unit: International Unit
commonly has unit: carat (mass)
commonly has unit: grain
commonly has unit: gram
commonly has unit: hundredweight (British)
commonly has unit: hundredweight (US)
commonly has unit: kilogram
commonly has unit: microgram
commonly has unit: milligram
commonly has unit: milligram RAE
commonly has unit: ounce (apothecaries')
commonly has unit: ounce (avoirdupois)
commonly has unit: pennyweight (Troy)
commonly has unit: pound (apthecaries')
commonly has unit: pound (avoirdupois)
commonly has unit: slug
commonly has unit: solar mass
commonly has unit: ton (long)
commonly has unit: ton (short)
commonly has unit: ton (short assay)
commonly has unit: tonne
commonly has unit: unified atomic mass unit
unofficial label: weight
symbol: m
label: massa @nl
comment: Mass is the amount of matter of a phenomenon. It is a base quantity in the International System of Units. Mass is force divided by acceleration.
label: 质量 @zh

mass unit
type: Class
equivalent class: Class
  union of: prefixed gram
  union of: prefixed tonne
  union of: prefixed unified atomic mass unit
  union of: Class
    one of: International Unit
    one of: carat (mass)
    one of: grain
    one of: gram
    one of: hundredweight (British)
    one of: hundredweight (US)
    one of: milligram RAE
    one of: ounce (apothecaries')
    one of: ounce (avoirdupois)
    one of: pennyweight (Troy)
    one of: pound (apthecaries')
    one of: pound (avoirdupois)
    one of: slug
    one of: solar mass
    one of: ton (long)
    one of: ton (short)
    one of: ton (short assay)
    one of: tonne
    one of: unified atomic mass unit
subclass of: unit

measure
type: Class
comment: A measure combines a number to a unit of measure. For example, "3 m" is a measure.

metre per prefixed second (time)
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has denominator
    all values from: prefixed second (time)
  intersection of: Restriction
    on property: has numerator
    has value: metre
  intersection of: Restriction
    on property: has denominator
    cardinality: 1
  intersection of: Restriction
    on property: has numerator
    cardinality: 1
subclass of: unit division

number
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: number unit
subclass of: Restriction
  on property: has dimension
  has value: dimensionOne
symbol: N
unofficial abbreviation: #
unofficial abbreviation: no
unofficial abbreviation: nr

number unit
type: Class
equivalent class: Class
  one of: one
subclass of: unit

period
type: Class
subclass of: time
type: NamedIndividual
commonly has unit: day
commonly has unit: hour
commonly has unit: microsecond
commonly has unit: millisecond
commonly has unit: minute
commonly has unit: second
commonly has unit: year
symbol: T
label: periode @nl

power
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: power unit
subclass of: Restriction
  on property: has dimension
  has value: power dimension
type: NamedIndividual
commonly has unit: decawatt
commonly has unit: horsepower (boiler)
commonly has unit: horsepower (British)
commonly has unit: horsepower (electric)
commonly has unit: horsepower (metric)
commonly has unit: horsepower (water)
commonly has unit: joule per second
commonly has unit: kilowatt
commonly has unit: megawatt
commonly has unit: milliwatt
commonly has unit: solar luminosity
commonly has unit: ton of refrigeration
commonly has unit: watt
comment: Power is the time rate at which work is done. It is a derived quantity in the International System of Units. Power is energy divided by time.
symbol: P
label: 功率 @zh
label: vermogen @nl

power unit
type: Class
equivalent class: Class
  union of: prefixed watt
  union of: Class
    one of: horsepower (boiler)
    one of: horsepower (British)
    one of: horsepower (electric)
    one of: horsepower (metric)
    one of: horsepower (water)
    one of: joule per second
    one of: solar luminosity
    one of: ton of refrigeration
    one of: watt
subclass of: unit

prefix
type: Class
comment: A prefix is a name that precedes a basic unit of measure to indicate a decimal or binary multiple or fraction of the unit. Each prefix has a unique symbol that is prepended to the unit symbol. For example, an electric current of 0.000 000 001 ampere is written by using the SI-prefix nano as 1 nanoampere or 1 nA.

prefixed ampere
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: ampere
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed are
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: are
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed degree Celsius
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: degree Celsius
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed farad
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: farad
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed gram
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: gram
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed hertz
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: hertz
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed kelvin
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: kelvin
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed litre
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: litre
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed metre
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: metre
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed metre per prefixed second (time)
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has denominator
    all values from: prefixed second (time)
  intersection of: Restriction
    on property: has numerator
    all values from: prefixed metre
  intersection of: Restriction
    on property: has denominator
    cardinality: 1
  intersection of: Restriction
    on property: has numerator
    cardinality: 1
subclass of: unit division

prefixed metre per second (time)
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has numerator
    all values from: prefixed metre
  intersection of: Restriction
    on property: has denominator
    has value: second
  intersection of: Restriction
    on property: has denominator
    cardinality: 1
  intersection of: Restriction
    on property: has numerator
    cardinality: 1
subclass of: unit division

prefixed ohm
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: ohm
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed pascal
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: pascal
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed second (time)
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: second
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed tonne
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: tonne
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed unified atomic mass unit
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: unified atomic mass unit
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed unit
type: Class
subclass of: unit
subclass of: Restriction
  on property: has unit
  all values from: singular unit

prefixed volt
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: volt
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

prefixed watt
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has prefix
    all values from: SI prefix
  intersection of: Restriction
    on property: has unit
    has value: watt
  intersection of: Restriction
    on property: has prefix
    cardinality: 1
  intersection of: Restriction
    on property: has unit
    cardinality: 1
subclass of: prefixed unit

pressure
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: pressure unit
subclass of: Restriction
  on property: has dimension
  has value: pressure dimension
type: NamedIndividual
commonly has unit: atmosphere (standard)
commonly has unit: atmosphere (technical)
commonly has unit: bar
commonly has unit: barye
commonly has unit: centimetre of mercury
commonly has unit: decibar
commonly has unit: metre of mercury
commonly has unit: microbar
commonly has unit: millibar
commonly has unit: millimetre of mercury
commonly has unit: newton per square metre
commonly has unit: pascal
commonly has unit: torr
comment: Pressure is the force applied to or distributed over a surface. It is a derived quantity in the International System of Units. Pressure is force divided by area.
symbol: p
alternative symbol: P

pressure unit
type: Class
equivalent class: Class
  union of: prefixed pascal
  union of: Class
    one of: atmosphere (standard)
    one of: atmosphere (technical)
    one of: bar
    one of: barye
    one of: centimetre of mercury
    one of: decibar
    one of: metre of mercury
    one of: microbar
    one of: millibar
    one of: millimetre of mercury
    one of: newton per square metre
    one of: pascal
    one of: torr
subclass of: unit

quantity
type: Class
comment: A quantity is a representation of a quantifiable (standardised) aspect (such as length, mass, and time) of a phenomenon (e.g., a star, a molecule, or a food product). Quantities are classified according to similarity in their (implicit) metrological aspect, e.g. the length of my table and the length of my chair are both classified as length.

ratio
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: ratio unit
subclass of: Restriction
  on property: has dimension
  has value: dimensionOne
type: NamedIndividual
commonly has unit: one
commonly has unit: parts per million
commonly has unit: percent

ratio scale
type: Class
subclass of: scale

ratio unit
type: Class
equivalent class: Class
  one of: one
  one of: parts per million
  one of: percent
subclass of: unit

SI prefix
type: Class
subclass of: prefix

scale
type: Class
alternative label: measurement scale
alternative label: meetschaal @nl
alternative label: schaal @nl

singular unit
type: Class
subclass of: unit

speed
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: speed unit
subclass of: Restriction
  on property: has dimension
  has value: speed dimension
type: NamedIndividual
commonly has unit: centimetre per day
commonly has unit: centimetre per second
commonly has unit: kilometre per hour
commonly has unit: knot (international)
commonly has unit: metre per day
commonly has unit: metre per second
commonly has unit: mile (statute) per hour
commonly has unit: millimetre per day
commonly has unit: millimetre per hour
commonly has unit: millimetre per second
commonly has unit: nautical mile per hour
symbol: v
label: snelheid (scalair) @nl
comment: Speed is the time rate of motion measured by the distance moved over in unit time.
label: 速度 @zh
alternative symbol: u

speed unit
type: Class
equivalent class: Class
  union of: metre per prefixed second (time)
  union of: prefixed metre per prefixed second (time)
  union of: prefixed metre per second (time)
  union of: Class
    one of: centimetre per day
    one of: kilometre per hour
    one of: knot (international)
    one of: metre per day
    one of: metre per second
    one of: mile (statute) per hour
    one of: millimetre per day
    one of: millimetre per hour
    one of: nautical mile per hour
subclass of: unit

square prefixed metre
type: Class
equivalent class: Class
  intersection of: Restriction
    on property: has base
    all values from: prefixed metre
  intersection of: Restriction
    on property: has base
    cardinality: 1
  intersection of: Restriction
    on property: has exponent
    has value: 2
  intersection of: Restriction
    on property: has exponent
    cardinality: 1
subclass of: unit exponentiation

stress
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: stress unit
subclass of: Restriction
  on property: has dimension
  has value: pressure dimension
type: NamedIndividual
commonly has unit: atmosphere (standard)
commonly has unit: atmosphere (technical)
commonly has unit: bar
commonly has unit: barye
commonly has unit: centimetre of mercury
commonly has unit: decibar
commonly has unit: metre of mercury
commonly has unit: microbar
commonly has unit: millibar
commonly has unit: millimetre of mercury
commonly has unit: newton per square metre
commonly has unit: pascal
commonly has unit: torr
label: mechanische spanning @nl
comment: Stress is a force that produces or tends to produce deformation in a body measured by the force applied per unit area.
symbol: σ

stress unit
type: Class
equivalent class: Class
  union of: prefixed pascal
  union of: Class
    one of: atmosphere (standard)
    one of: atmosphere (technical)
    one of: bar
    one of: barye
    one of: centimetre of mercury
    one of: decibar
    one of: metre of mercury
    one of: microbar
    one of: millibar
    one of: millimetre of mercury
    one of: newton per square metre
    one of: pascal
    one of: torr
subclass of: unit

system of units
type: Class
comment: In order to achieve a coherent, interdependent set of units of measure in the wide variety of units that exist, units are organised in systems of units. A system of units is based on a set of units chosen by convention to be the system’s base units, units that are considered to be mutually independent (i.e., can’t be expressed in terms of each other).

temperature
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has scale
  all values from: Class
    one of: Celsius scale
    one of: Fahrenheit scale
    one of: KelvinScale
    one of: RankineScale
    one of: ReaumurScale
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: Class
      union of: temperature unit
      union of: Temperature scale
subclass of: Restriction
  on property: has dimension
  has value: thermodynamic temperature dimension
type: NamedIndividual
commonly has unit: degree Celsius
commonly has unit: degree Fahrenheit
commonly has unit: degree Rankine
commonly has unit: degree Réaumur
commonly has unit: kelvin
label: temperatuur @nl
alternative symbol: θ
symbol: T
comment: Temperature is the extent to which an object is hot.
label: 温度 @zh
unofficial abbreviation: temp
alternative symbol: t

temperature unit
type: Class
equivalent class: Class
  union of: prefixed degree Celsius
  union of: prefixed kelvin
  union of: Class
    one of: degree Celsius
    one of: degree Fahrenheit
    one of: degree Rankine
    one of: degree Réaumur
    one of: kelvin
subclass of: unit

thermal conductivity
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: thermal conductivity unit
subclass of: Restriction
  on property: has dimension
  has value: thermal conductivity dimension
type: NamedIndividual
commonly has unit: watt per metre kelvin
symbol: κ
comment: Termal conductivity indicates the ability of a material to conduct heat.
alternative symbol: K
alternative symbol: λ
alternative symbol: k
label: thermische geleidbaarheid @nl

thermal conductivity unit
type: Class
equivalent class: Class
  one of: watt per metre kelvin
subclass of: unit

thermal resistance
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: thermal resistance unit
subclass of: Restriction
  on property: has dimension
  has value: thermal resistance dimension
type: NamedIndividual
commonly has unit: kelvin per watt

thermal resistance unit
type: Class
equivalent class: Class
  one of: kelvin per watt
subclass of: unit

thermodynamic temperature scale
type: Class
subclass of: scale

thickness
type: Class
subclass of: length
type: NamedIndividual
commonly has unit: ångström
commonly has unit: astronomical unit
commonly has unit: centimetre
commonly has unit: chain
commonly has unit: cicero
commonly has unit: decimetre
commonly has unit: fathom (US survey)
commonly has unit: fermi
commonly has unit: foot (international)
commonly has unit: foot (US survey)
commonly has unit: furlong (international)
commonly has unit: gigaparsec
commonly has unit: inch (international)
commonly has unit: kilometre
commonly has unit: kiloparsec
commonly has unit: light year
commonly has unit: megaparsec
commonly has unit: metre
commonly has unit: micrometre
commonly has unit: micron
commonly has unit: mil (length)
commonly has unit: mile (statute)
commonly has unit: mile (US survey)
commonly has unit: millimetre
commonly has unit: nautical mile (international)
commonly has unit: parsec
commonly has unit: pica (ATA)
commonly has unit: pica (Postscript)
commonly has unit: pica (TeX)
commonly has unit: point (ATA)
commonly has unit: point (Didot)
commonly has unit: point (Postscript)
commonly has unit: point (TeX)
commonly has unit: rod (US)
commonly has unit: solar radius
commonly has unit: yard (international)
label: dikte @nl
symbol: d
alternative symbol: δ

time
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: time unit
subclass of: Restriction
  on property: has dimension
  has value: time dimension
type: NamedIndividual
commonly has unit: day
commonly has unit: hour
commonly has unit: microsecond
commonly has unit: millisecond
commonly has unit: minute
commonly has unit: second
commonly has unit: year
label: tijd @nl
comment: Time is a base quantity in the International System of Units and other systems of units. It is measured by numbers of repetitions of cyclical events.
symbol: t
label: 时间 @zh

time unit
type: Class
subclass of: unit

torque
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: torque unit
subclass of: Restriction
  on property: has dimension
  has value: energy dimension
type: NamedIndividual
commonly has unit: micronewton metre
commonly has unit: millinewton metre
commonly has unit: newton metre
label: 扭矩 @zh
symbol: T
label: koppel @nl
comment: Torque is the effectiveness of a force to produce rotation about an axis, measured by the product of the force and the perpendicular distance from the line of action of the force to the axis.

torque unit
type: Class
equivalent class: Class
  one of: micronewton metre
  one of: millinewton metre
  one of: newton metre
subclass of: unit

unit
type: Class
alternative label: unit of measure
alternative label: unit of measurement
comment: A unit of measure is a definite magnitude of a quantity, defined and adopted by convention or by law. It is used as a standard for measurement of the same quantity, where any other value of the quantity can be expressed as a simple multiple of the unit. For example, length is a quantity; the metre is a unit of length that represents a definite predetermined length. When we say 10 metre (or 10 m), we actually mean 10 times the definite predetermined length called "metre".

unit division
type: Class
subclass of: compound unit

unit exponentiation
type: Class
subclass of: compound unit

unit multiplication
type: Class
subclass of: compound unit

velocity
type: Class
subclass of: speed
type: NamedIndividual
commonly has unit: centimetre per day
commonly has unit: centimetre per second
commonly has unit: kilometre per hour
commonly has unit: knot (international)
commonly has unit: metre per day
commonly has unit: metre per second
commonly has unit: mile (statute) per hour
commonly has unit: millimetre per day
commonly has unit: millimetre per hour
commonly has unit: millimetre per second
commonly has unit: nautical mile per hour
symbol: u
alternative symbol: v
label: snelheid (vector) @nl
alternative symbol: w
comment: Velocity is the rate of change of position.

volume
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: volume unit
subclass of: Restriction
  on property: has dimension
  has value: volume dimension
type: NamedIndividual
commonly has unit: acre foot
commonly has unit: barrel (US)
commonly has unit: bushel (US)
commonly has unit: cord
commonly has unit: cubic centimetre
commonly has unit: cubic kiloparsec
commonly has unit: cubic metre
commonly has unit: cubic parsec
commonly has unit: cup (US customary)
commonly has unit: dessertspoon
commonly has unit: dry gallon (US)
commonly has unit: dry pint (US)
commonly has unit: dry quart (US)
commonly has unit: fluid ounce (imperial)
commonly has unit: fluid ounce (US)
commonly has unit: gallon (imperial)
commonly has unit: gallon (US)
commonly has unit: gill (imperial)
commonly has unit: gill (US)
commonly has unit: liquid pint (US)
commonly has unit: liquid quart (US)
commonly has unit: litre
commonly has unit: microlitre
commonly has unit: millilitre
commonly has unit: peck (US)
commonly has unit: pint (imperial)
commonly has unit: quart (imperial)
commonly has unit: stere
commonly has unit: tablespoon (US)
commonly has unit: teaspoon (US)
commonly has unit: ton (register)
alternative symbol: v
alternative label: inhoud @nl
comment: Volume is a measure of how much three-dimensional space any phenomenon occupies. It is a derived quantity in the International System of Units. Volume is length to the power 3.
label: 体积 @zh
symbol: V

volume unit
type: Class
equivalent class: Class
  union of: cubic prefixed metre
  union of: prefixed litre
  union of: Class
    one of: acre foot
    one of: barrel (US)
    one of: bushel (US)
    one of: cord
    one of: cubic kiloparsec
    one of: cubic metre
    one of: cubic parsec
    one of: cup (US customary)
    one of: dessertspoon
    one of: dry gallon (US)
    one of: dry pint (US)
    one of: dry quart (US)
    one of: fluid ounce (imperial)
    one of: fluid ounce (US)
    one of: gallon (imperial)
    one of: gallon (US)
    one of: gill (imperial)
    one of: gill (US)
    one of: liquid pint (US)
    one of: liquid quart (US)
    one of: litre
    one of: peck (US)
    one of: pint (imperial)
    one of: quart (imperial)
    one of: stere
    one of: tablespoon (US)
    one of: teaspoon (US)
    one of: ton (register)
subclass of: unit

volumetric flow rate
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: volumetric flow rate unit
subclass of: Restriction
  on property: has dimension
  has value: volumetric flow rate dimension
type: NamedIndividual
commonly has unit: cubic metre per second
commonly has unit: cubic metre per year
commonly has unit: litre per hour
alternative label: flow rate
alternative label: volume flow rate
alternative label: volume flow

volumetric flow rate unit
type: Class
equivalent class: Class
  one of: cubic metre per second
  one of: cubic metre per year
  one of: litre per hour
subclass of: unit

wavenumber
type: Class
subclass of: quantity
subclass of: Restriction
  on property: has value
  all values from: Restriction
    on property: has unit
    all values from: wave number unit
subclass of: Restriction
  on property: has dimension
  has value: wavenumber dimension
type: NamedIndividual
commonly has unit: reciprocal metre
comment: Wavenumber is the number of repeating units of a propagating wave (the number of times a wave has the same phase) per unit of space.
symbol: σ
label: golfgetal @nl

wave number unit
type: Class
equivalent class: Class
  one of: reciprocal metre
subclass of: unit

width
type: Class
subclass of: length
type: NamedIndividual
commonly has unit: ångström
commonly has unit: astronomical unit
commonly has unit: centimetre
commonly has unit: chain
commonly has unit: cicero
commonly has unit: decimetre
commonly has unit: fathom (US survey)
commonly has unit: fermi
commonly has unit: foot (international)
commonly has unit: foot (US survey)
commonly has unit: furlong (international)
commonly has unit: gigaparsec
commonly has unit: inch (international)
commonly has unit: kilometre
commonly has unit: kiloparsec
commonly has unit: light year
commonly has unit: megaparsec
commonly has unit: metre
commonly has unit: micrometre
commonly has unit: micron
commonly has unit: mil (length)
commonly has unit: mile (statute)
commonly has unit: mile (US survey)
commonly has unit: millimetre
commonly has unit: nautical mile (international)
commonly has unit: parsec
commonly has unit: pica (ATA)
commonly has unit: pica (Postscript)
commonly has unit: pica (TeX)
commonly has unit: point (ATA)
commonly has unit: point (Didot)
commonly has unit: point (Postscript)
commonly has unit: point (TeX)
commonly has unit: rod (US)
commonly has unit: solar radius
commonly has unit: yard (international)
label: breedte @nl
symbol: w

Australian dollar
type: NamedIndividual
type: singular unit
type: unit
label: 澳元 @zh

Brazilian real
type: NamedIndividual
type: singular unit
type: unit
label: 巴西里拉 @zh

Canadian dollar
type: NamedIndividual
type: singular unit
type: unit
label: 加元 @zh

Celsius scale
type: NamedIndividual
type: interval scale
has dimension: thermodynamic temperature dimension
has scale: KelvinScale
has unit: degree Celsius
has factor: 1.0
has off-set: -273.15
alternative label: International Celsius Temperature scale of 1990
label: Celsiusschaal @nl
label: 摄氏温标 @zh

Chinese yuan
type: NamedIndividual
type: singular unit
type: unit
label: 中国元 @zh

Fahrenheit scale
type: NamedIndividual
type: interval scale
has dimension: thermodynamic temperature dimension
has scale: KelvinScale
has unit: degree Fahrenheit
has factor: 1.8
has off-set: -459.67
label: 华氏温标 @zh
label: Fahrenheitschaal @nl

Gaussian system of units
type: NamedIndividual
type: system of units
has base quantity: length
has base quantity: mass
has base quantity: time
has base unit: centimetre
has base unit: gram
has base unit: second
has derived quantity: capacitance
has derived quantity: electric current
has derived quantity: electric potential
has derived quantity: electrical resistance
has derived unit: abampere
has derived unit: abfarad
has derived unit: abohm
has derived unit: abvolt
has derived unit: statampere
has derived unit: statfarad
has derived unit: statohm
has derived unit: statvolt
alternative label: Gaussian CGS system of units
alternative label: mixed CGS system of units
alternative label: symmetrised CGS system of units
label: Gaussische eenhedenstelsel @nl
label: 高斯系统单位 @zh

Hong Kong dollar
type: NamedIndividual
type: singular unit
type: unit
label: 港元 @zh

Indian rupee
type: NamedIndividual
type: singular unit
type: unit
label: 印度卢比 @zh

International System of Units
type: NamedIndividual
type: system of units
has base quantity: electric current
has base quantity: length
has base quantity: mass
has base quantity: time
has base unit: ampere
has base unit: kelvin
has base unit: kilogram
has base unit: metre
has base unit: second
has derived quantity: angular speed
has derived quantity: area
has derived quantity: capacitance
has derived quantity: dynamic viscosity
has derived quantity: electric potential
has derived quantity: electrical resistance
has derived quantity: frequency
has derived quantity: power
has derived quantity: pressure
has derived quantity: speed
has derived quantity: torque
has derived quantity: volume
has derived unit: wavenumber
has derived unit: centimetre
has derived unit: centimetre per second
has derived unit: cubic centimetre
has derived unit: cubic metre
has derived unit: decatesla
has derived unit: decavolt
has derived unit: decawatt
has derived unit: decaweber
has derived unit: decimetre
has derived unit: degree Celsius
has derived unit: farad
has derived unit: gram
has derived unit: hertz
has derived unit: kilohertz
has derived unit: kilohm
has derived unit: kilometre
has derived unit: kilowatt
has derived unit: megahertz
has derived unit: megawatt
has derived unit: metre per second
has derived unit: metre per second squared
has derived unit: microampere
has derived unit: microgram
has derived unit: micrometre
has derived unit: microsecond
has derived unit: milliampere
has derived unit: milligram
has derived unit: millihertz
has derived unit: millimetre
has derived unit: millimetre per second
has derived unit: millimetre per second squared
has derived unit: millisecond
has derived unit: millivolt
has derived unit: milliwatt
has derived unit: newton
has derived unit: newton metre
has derived unit: ohm
has derived unit: pascal
has derived unit: radian
has derived unit: radian per second
has derived unit: reciprocal metre
has derived unit: square centimetre
has derived unit: square kilometre
has derived unit: square metre
has derived unit: square millimetre
has derived unit: volt
has derived unit: watt
has derived unit: watt per metre kelvin
abbreviation: SI
label: Internationale Stelsel van Eenheden @nl
label: 国际单位制 @zh

International Unit
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
symbol: IU
label: 国际单位 @zh

Japanese yen
type: NamedIndividual
type: singular unit
type: unit
label: 日元 @zh

Mexican peso
type: NamedIndividual
type: singular unit
type: unit
label: 墨西哥比索 @zh

New Zealand dollar
type: NamedIndividual
type: singular unit
type: unit
label: 新西兰美元 @zh

Norwegian krone
type: NamedIndividual
type: singular unit
type: unit
label: 挪威克朗 @zh

RankineScale
type: NamedIndividual
type: ratio scale
has dimension: thermodynamic temperature dimension
has scale: KelvinScale
has unit: degree Rankine
has factor: 1.8
has off-set: 0.0

ReaumurScale
type: NamedIndividual
type: interval scale
has dimension: thermodynamic temperature dimension
has scale: KelvinScale
has unit: degree Réaumur
has factor: 1.0
has off-set: -218.52

RussianRuble
type: NamedIndividual
type: singular unit
type: unit
label: 俄罗斯卢布 @zh

Singapore dollar
type: NamedIndividual
type: singular unit
type: unit
label: 新加坡元 @zh

South African rand
type: NamedIndividual
type: singular unit
type: unit
label: 南非兰特 @zh

South Korean won
type: NamedIndividual
type: singular unit
type: unit
label: 韩元 @zh

Swedish krona
type: NamedIndividual
type: singular unit
type: unit
label: 瑞典克朗 @zh

Swiss franc
type: NamedIndividual
type: singular unit
type: unit
label: 瑞士法郎 @zh

Turkish lira
type: NamedIndividual
type: singular unit
type: unit
label: 土耳其里拉 @zh

United States dollar
type: NamedIndividual
type: singular unit
type: unit
label: 美国美元 @zh

abampere
type: NamedIndividual
type: singular unit
type: unit
has dimension: electric current dimension
has unit: ampere
has factor: 10.0
symbol: abA
comment: The abampere is a unit of electric current defined as 10 ampere.
label: abampère @nl

abfarad
type: NamedIndividual
type: singular unit
type: unit
has dimension: capacitance dimension
has unit: farad
has factor: 1.0E9
symbol: abF
comment: The abfarad is a unit of capacitance defined as 1.0e9 farad.

abohm
type: NamedIndividual
type: singular unit
type: unit
has dimension: electrical resistance dimension
has unit: ohm
has factor: 1.0E-9
symbol: abΩ
comment: The abohm is a unit of electrical resistance defined as 1.0e-9 ohm.

abvolt
type: NamedIndividual
type: singular unit
type: unit
has dimension: electric potential dimension
has unit: volt
has factor: 1.0E-8
symbol: abV
comment: The abvolt is a unit of electric potential defined as 1.0e-8 volt.

acre (international)
type: NamedIndividual
type: singular unit
type: unit
has dimension: area dimension
has unit: square metre
has factor: 4046.8564
alternative label: international acre
symbol: ac
comment: The international acre is a unit of area defined as 4.0468564224e3 square metre.
label: 英亩（国际） @zh

acre (US survey)
type: NamedIndividual
type: singular unit
type: unit
has dimension: area dimension
has unit: square metre
has factor: 4046.8726
alternative label: US survey acre
symbol: ac
comment: The US survey acre is a unit of area defined as 4.046872609874252e3 square metre.
label: 英亩（美国调查） @zh

acre foot
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 1233.489
comment: The acre foot is a unit of volume defined as 1.233489e3 cubic metre.

ampere
type: NamedIndividual
type: singular unit
type: unit
has dimension: electric current dimension
longcomment: The ampere is a unit of electric current defined as the constant current that produces an attractive force of 2e–7 newton per metre of length between two straight, parallel conductors of infinite length and negligible circular cross section placed one metre apart in a vacuum. The ampere is a base unit in the International System of Units.
symbol: A
comment: The ampere is a unit of electric current defined as the constant current that produces an attractive force of 2e–7 newton per metre of length between two straight, parallel conductors of infinite length and negligible circular cross section placed one metre apart in a vacuum.
label: ampère @nl

ångström
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1.0E-10
alternative label: angstrom
symbol: Å
comment: The ångström is a unit of length defined as 1.0e-10 metre. The unit is often used for wavelengths of electromagnetic radiation or to express the sizes of atoms and molecules.

angular speed dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 0
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -1

are
type: NamedIndividual
type: singular unit
type: unit
has dimension: area dimension
has unit: square metre
has factor: 100.0
symbol: a
comment: The are is a unit of area defined as 100 square metre.

area dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 2
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 0
label: oppervlaktedimensie @nl

astronomical unit
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1.49597864E11
symbol: AU
comment: The atronomical unit is a unit of length defined as 149 597 870 700 metre (IAU 2012 Resolution).

atmosphere (standard)
type: NamedIndividual
type: singular unit
type: unit
has dimension: pressure dimension
has unit: pascal
has factor: 101325.0
alternative label: standard atmosphere
symbol: atm
comment: The standard atmosphere is a unit of pressure defined as 1.01325e5 pascal.
label: atmosfeer (standaard) @nl

atmosphere (technical)
type: NamedIndividual
type: singular unit
type: unit
has dimension: pressure dimension
has unit: pascal
has factor: 98066.5
alternative label: technical atmosphere
symbol: at
comment: The technical atmosphere is a unit of pressure defined as 9.80665e4 pascal.

atto
type: NamedIndividual
type: SI prefix
has factor: 1.0E-18
symbol: a

bar
type: NamedIndividual
type: singular unit
type: unit
has dimension: pressure dimension
has unit: pascal
has factor: 100000.0
LaTeX command: \barUnit
symbol: bar
comment: The bar is a unit of pressure defined as 100 000 pascal.
label: 巴（压力计量单位） @zh

barn
type: NamedIndividual
type: singular unit
type: unit
has dimension: area dimension
has unit: square metre
has factor: 1.0E-28
symbol: b
comment: The barn is a unit of area defined as 1.0e-28 square metre.

barrel (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.1589873
alternative label: US barrel
symbol: bbl
comment: The US barrel is a unit of volume defined as 1.589873e-1 cubic metre.

barye
type: NamedIndividual
type: singular unit
type: unit
has dimension: pressure dimension
has unit: pascal
has factor: 0.1
symbol: ba
comment: The barye is a unit of pressure defined as 0.1 pascal.

baud
type: NamedIndividual
type: singular unit
type: unit
symbol: Bd
comment: The baud is a unit of symbol rate defined as one distinct symbol change or signalling event made to the transmission medium per second in a digitally modulated signal or a line code.

biot
type: NamedIndividual
type: singular unit
type: unit
has dimension: electric current dimension
has unit: ampere
has factor: 10.0
symbol: Bi
comment: The biot is a unit of electric current defined as 10 ampere.

bushel (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.03523907
alternative label: US bushel
symbol: bu
comment: The US bushel is a unit of volume defined as 3.523907e-2 cubic metre.

capacitance dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 2
has SI length dimension exponent: -2
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: -1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 4

carat (mass)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 2.0E-4
comment: The carat (mass) is a unit of mass defined as 2.0e-4 kilogram.
label: karaat (massa) @nl

centi
type: NamedIndividual
type: SI prefix
has factor: 0.01
symbol: c

centimetre
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: centi
has unit: metre
symbol: cm
comment: The centimetre is a unit of length defined as 1.0e-2 metre.
label: centimeter @nl

centimetre of mercury
type: NamedIndividual
type: prefixed unit
has dimension: pressure dimension
has prefix: centi
has unit: metre of mercury
symbol: cm Hg
comment: The centimetre of mercury is a unit of pressure defined as 1.0e-2 metre of mercury.
label: centimeter kwik @nl

centimetre per day
type: NamedIndividual
type: unit division
has denominator: day
has numerator: centimetre
alternative symbol: cm d-1
alternative symbol: cm·d-1
symbol: cm/d
comment: Centimetre per day is a unit of speed defined as centimetre divided by day.
label: centimeter per dag @nl

centimetre per second
type: NamedIndividual
type: prefixed metre per second (time)
has denominator: second
has dimension: speed dimension
has numerator: centimetre
alternative symbol: cm s-1
alternative symbol: cm·s-1
symbol: cm/s
comment: Centimetre per second is a unit of speed defined as centimetre divided by second.
label: centimeter per seconde @nl

chain
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 20.11684
symbol: ch
comment: The chain is a unit of length defined as 2.011684e1 metre.

cicero
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: point (Didot)
has factor: 12.0
comment: The cicero is a unit of length defined as 12 point (Didot).

circular mil
type: NamedIndividual
type: singular unit
type: unit
has dimension: area dimension
has unit: square metre
has factor: 5.067075E-10
comment: The cicular mil is a unit of area defined as 5.067075e-10 square metre.

cord
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 3.624556
comment: The cord is a unit of volume defined as 3.624556 cubic metre.

coulomb per volt
type: NamedIndividual
type: unit division
has denominator: volt
has dimension: capacitance dimension
alternative symbol: C V-1
alternative symbol: C·V-1
symbol: C/V

cubic centimetre
type: NamedIndividual
type: cubic prefixed metre
has base: centimetre
has dimension: volume dimension
has exponent: 3
symbol: cm3
label: kubieke centimeter @nl

cubic kiloparsec
type: NamedIndividual
type: unit exponentiation
has base: kiloparsec
has dimension: volume dimension
has exponent: 3
symbol: kpc3
label: kubieke kiloparsec @nl

cubic metre
type: NamedIndividual
type: unit exponentiation
has base: metre
has dimension: volume dimension
has exponent: 3
longcomment: Cubic metre is a unit of volume defined as the volume of a cube whose sides measure exactly one metre. Cubic metre is a derived unit in the International System of Units.
symbol: m3
comment: Cubic metre is a unit of volume defined as the volume of a cube whose sides measure exactly one metre.
label: kubieke meter @nl

cubic metre per second
type: NamedIndividual
type: unit division
has denominator: second
has dimension: volumetric flow rate dimension
has numerator: cubic metre
alternative symbol: m3 s-1
alternative symbol: m3·s-1
symbol: m3/s
label: kubieke meter per seconde @nl

cubic metre per year
type: NamedIndividual
type: unit division
has denominator: year
has dimension: volumetric flow rate dimension
has numerator: cubic metre
label: kubieke meter per jaar @nl

cubic parsec
type: NamedIndividual
type: unit exponentiation
has base: parsec
has dimension: volume dimension
has exponent: 3
symbol: pc3
label: kubieke parsec @nl

cup (US customary)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 2.365882E-4
LaTeX command: \cupUnit
alternative label: US customary cup
comment: The US customary cup is a unit of volume defined as 2.365882e-4 cubic metre.

day
type: NamedIndividual
type: singular unit
type: unit
has dimension: time dimension
has unit: second
has factor: 86400.0
LaTeX command: \dayUnit
symbol: d
comment: The day is a unit of time defined as 86400 second.
label: dag @nl
label: 天 @zh

deca
type: NamedIndividual
type: SI prefix
has factor: 10.0
alternative label: deka
symbol: da

decatesla
type: NamedIndividual
type: prefixed unit
has prefix: deca
symbol: daT

decavolt
type: NamedIndividual
type: prefixed unit
has dimension: electric potential dimension
has prefix: deca
has unit: volt
symbol: daV

decawatt
type: NamedIndividual
type: prefixed unit
has dimension: power dimension
has prefix: deca
has unit: watt
symbol: daW

decaweber
type: NamedIndividual
type: prefixed unit
has prefix: deca
symbol: daWb

deci
type: NamedIndividual
type: SI prefix
has factor: 0.1
symbol: d

decibar
type: NamedIndividual
type: prefixed unit
has dimension: pressure dimension
has prefix: deci
has unit: bar
symbol: dbar
comment: The decibar is a unit of pressure defined as 1.0e-1 bar.

decimetre
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: deci
has unit: metre
symbol: dm
comment: The decimetre is a unit of length defined as 1.0e-1 metre.
label: decimeter @nl

degree Celsius
type: NamedIndividual
type: singular unit
type: unit
has dimension: thermodynamic temperature dimension
has unit: kelvin
alternative label: centigrade
longcomment: The degree Celsius is a unit of temperature defined as 1 kelvin. The degree Celsius is a derived unit in the International System of Units.
symbol: °C
comment: The degree Celsius is a unit of temperature defined as 1 kelvin.
label: graad Celsius @nl
label: 摄氏度 @zh

degree Fahrenheit
type: NamedIndividual
type: singular unit
type: unit
has dimension: thermodynamic temperature dimension
has unit: kelvin
has factor: 0.5555556
symbol: °F
comment: The degree Fahrenheit is a unit of temperature defined as 5.555556e-1 kelvin.
label: graad Fahrenheit @nl

degree Rankine
type: NamedIndividual
type: singular unit
type: unit
has dimension: thermodynamic temperature dimension
has unit: kelvin
has factor: 0.5555556
alternative symbol: °Ra
symbol: °R
comment: The degree Rankine is a unit of temperature defined as 5.555556e-1 kelvin.
label: graad Rankine @nl

degree Réaumur
type: NamedIndividual
type: singular unit
type: unit
has dimension: thermodynamic temperature dimension
has unit: kelvin
has factor: 1.25
alternative symbol: °R
alternative symbol: °Re
symbol: °Ré
comment: The degree Réaumur is a unit of temperature defined as 1.25 kelvin.
label: graad Réaumur @nl

dessertspoon
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: teaspoon (US)
has factor: 2.0
comment: The desserspoon is a unit of volume defined as 2 teaspoon.

dimensionOne
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 0
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 0
symbol: 1

dry gallon (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.004404884
alternative label: US dry gallon
alternative label: gallon (US dry)
symbol: gal
comment: The US dry gallon is a unit of volume defined as 4.40488377086e-3 cubic metre.

dry pint (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 5.506105E-4
alternative label: US dry pint
alternative label: pint (US dry)
symbol: dry pt
comment: The US dry pint is a unit of volume defined as 5.506105e-4 cubic metre.

dry quart (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.001101221
alternative label: US dry quart
alternative label: quart (US dry)
symbol: dry qt
comment: The US dry quart is a unit of volume defined as 1.101221e-3 cubic metre.

dynamic viscosity dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: -1
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -1

electric current dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 1
has SI length dimension exponent: 0
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 0
symbol: I

electric potential dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: -1
has SI length dimension exponent: 2
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -3

electrical resistance dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: -2
has SI length dimension exponent: 2
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -3

energy dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 2
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -2

euro
type: NamedIndividual
type: singular unit
type: unit
label: 欧元 @zh

exa
type: NamedIndividual
type: SI prefix
has factor: 9.9999998E17
symbol: E

farad
type: NamedIndividual
type: singular unit
type: unit
has dimension: capacitance dimension
has unit: coulomb per volt
longcomment: The farad is a unit of capacitance defined as ampere times second divided by volt = coulomb divided by volt = coulomb squared divided by joule = coulomb squared divided by newton times metre = second squared times coulomb squared divided by square metre times kilogram = second to the power 4 times ampere squared divided by square metre times kilogram. The farad is a derived unit in the International System of Units.
symbol: F
comment: The farad is a unit of capacitance defined as ampere times second divided by volt = coulomb divided by volt = coulomb squared divided by joule = coulomb squared divided by newton times metre = second squared times coulomb squared divided by square metre times kilogram = second to the power 4 times ampere squared divided by square metre times kilogram.

fathom (US survey)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1.828804
alternative label: US survey fathom
comment: The US survey fathom is a unit of length defined as 1.828804 metre.

femto
type: NamedIndividual
type: SI prefix
has factor: 1.0E-15
symbol: f

fermi
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1.0E-15
comment: The fermi is a unit of length defined as 1.0e-15 metre.

fluid ounce (imperial)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 2.841306E-5
alternative label: imperial fluid ounce
alternative label: ounce (imperial fluid)
symbol: fl oz
comment: The imperial fluid ounce is a unit of volume defined as 2.841306e-5 cubic metre.

fluid ounce (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 2.957353E-5
alternative label: US fluid ounce
alternative label: ounce (US fluid)
symbol: fl oz
comment: The US fluid ounce is a unit of volume defined as 2.957353e-5 cubic metre.

foot (international)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 0.3048
alternative label: international foot
symbol: ft
comment: The international foot is a unit of length defined as 3.048e-1 metre.
label: 英尺（国际） @zh

foot (US survey)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 0.3048006
alternative label: US survey foot
symbol: ft
comment: The US survey foot is a unit of length defined as 3.048006e-1 metre.

frequency dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 0
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -1

furlong (international)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 201.168
alternative label: international furlong
comment: The international furlong is a unit of length defined as 201.168 metre.

gallon (imperial)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.00454609
alternative label: imperial gallon
symbol: gal
comment: The imperial gallon is a unit of volume defined as 4.54609e-3 cubic metre.

gallon (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.003785412
alternative label: US gallon
symbol: gal
comment: The US gallon is a unit of volume defined as 3.785412e-3 cubic metre.

giga
type: NamedIndividual
type: SI prefix
has factor: 1.0E9
symbol: G

gigaparsec
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: giga
has unit: parsec
symbol: Gpc
comment: The gigaparsec is a unit of length defined as 1.0e9 parsec. Gebruikt voor de afstand op de schaal van het heelal.

gill (imperial)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 1.420653E-4
alternative label: imperial gill
symbol: gi
comment: The imperial gill is a unit of volume defined as 1.420653e-4 cubic metre.

gill (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 1.182941E-4
alternative label: US gill
symbol: gi
comment: The US gill is a unit of volume defined as 1.182941e-4 cubic metre.

grain
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 6.479891E-5
symbol: gr
comment: The grain is a unit of mass defined as 6.479891e-5 kilogram.

gram
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 0.001
symbol: g
comment: The gram is a unit of mass defined as 1.0e-3 kilogram.
label: 克 @zh

hecto
type: NamedIndividual
type: SI prefix
has factor: 100.0
symbol: h

hertz
type: NamedIndividual
type: singular unit
type: unit
has dimension: frequency dimension
longcomment: The hertz is a unit of frequency defined as 1 divided by second. The hertz is a derived unit in the International System of Units.
symbol: Hz
comment: The hertz is a unit of frequency defined as 1 divided by second.
label: 赫兹 @zh

horsepower (boiler)
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: watt
has factor: 9809.5
alternative label: boiler horsepower
comment: The boiler horsepower is a unit of power defined as 9.80950e3 watt.

horsepower (British)
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: watt
has factor: 745.7
alternative label: British horsepower
alternative label: imperial horsepower
comment: The British horsepower is a unit of power defined as 7.4570e2 watt.

horsepower (electric)
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: watt
has factor: 746.0
alternative label: electric horsepower
comment: The electric horsepower is a unit of power defined as 7.46e2 watt.

horsepower (metric)
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: watt
has factor: 735.4988
alternative label: metric horsepower
symbol: PS
comment: The metric horsepower is a unit of power defined as 7.354988e2 watt.

horsepower (water)
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: watt
has factor: 746.043
alternative label: water horsepower
comment: The water horsepower is a unit of power defined as 7.46043e2 watt.

hour
type: NamedIndividual
type: singular unit
type: unit
has dimension: time dimension
has unit: second
has factor: 3600.0
alternative symbol: u
symbol: h
comment: The hour is a unit of time defined as 3600 second.
label: uur @nl
label: 小时 @zh

hundredweight (British)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 50.80235
alternative label: British hundredweight
comment: The British hundredweight is a unit of mass defined as 5.080235e1 kilogram.

hundredweight (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 45.35924
alternative label: US hundredweight
comment: The US hundredweight is a unit of mass defined as 4.535924e1 kilogram.

inch (international)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 0.0254
alternative label: international inch
symbol: in
comment: The international inch is a unit of length defined as 2.54e-2 metre.
label: 英寸（国际） @zh

joule per second
type: NamedIndividual
type: unit division
has denominator: second
has dimension: power dimension
alternative symbol: J s-1
alternative symbol: J·s-1
symbol: J/s
label: joule per seconde @nl

kelvin
type: NamedIndividual
type: singular unit
type: unit
has dimension: thermodynamic temperature dimension
longcomment: The kelvin is a unit of temperature defined as 1/273.16 of the thermodynamic temperature of the triple point of water. The kelvin is a base unit in the International System of Units.
symbol: K
comment: The kelvin is a unit of temperature defined as 1/273.16 of the thermodynamic temperature of the triple point of water.
label: 开 @zh

kelvin per watt
type: NamedIndividual
type: unit division
has denominator: watt
has dimension: thermal resistance dimension
has numerator: kelvin
alternative symbol: K W-1
alternative symbol: K·W-1
symbol: K/W

kilo
type: NamedIndividual
type: SI prefix
has factor: 1000.0
symbol: k

kilogram
type: NamedIndividual
type: prefixed unit
has dimension: mass dimension
has prefix: kilo
has quantity: mass of the international prototype of the kilogram
has unit: gram
longcomment: The kilogram is a unit of mass defined as the mass of the international prototype of the kilogram. The kilogram is a base unit in the International System of Units.
symbol: kg
comment: The kilogram is a unit of mass defined as the mass of the international prototype of the kilogram.
label: 公斤 @zh

reciprocal metre kilogram second to the power -2
type: NamedIndividual
has dimension: pressure dimension
has term 2: reciprocal metre
alternative symbol: m-1·kg·s-2
symbol: m-1 kg s-2
label: omgekeerde meter kilogram seconde tot de macht -2 @nl

kilohertz
type: NamedIndividual
type: prefixed unit
has dimension: frequency dimension
has prefix: kilo
has unit: hertz
symbol: kHz
comment: The kilohertz is a unit of frequency defined as 1.0e3 hertz.

kilohm
type: NamedIndividual
type: prefixed unit
has dimension: electrical resistance dimension
has prefix: kilo
has unit: ohm
alternative label: kiloohm
symbol: kΩ

kilometre
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: kilo
has unit: metre
symbol: km
comment: The kilometre is a unit of length defined as 1.0e3 metre.
label: kilometer @nl
label: 公里 @zh

kilometre per hour
type: NamedIndividual
type: unit division
has denominator: hour
has dimension: speed dimension
has numerator: kilometre
alternative symbol: km h-1
alternative symbol: km·h-1
symbol: km/h
comment: Kilometre per hour is a unit of speed defined as kilometre divided by hour.
label: kilometer per uur @nl

kiloparsec
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: kilo
has unit: parsec
symbol: kpc
comment: The kiloparsec is a unit of length defined as 1.0e3 parsec. Gebruikt voor afstanden op de schaal van het melkwegstelsel.

kilowatt
type: NamedIndividual
type: prefixed unit
has dimension: power dimension
has prefix: kilo
has unit: watt
symbol: kW

kilowatt hour
type: NamedIndividual
has dimension: energy dimension
has term 1: kilowatt
has term 2: hour
alternative label: kilowatt-hour
alternative label: kilowatthour
alternative symbol: kWh
alternative symbol: kW·h
symbol: kW h

knot (international)
type: NamedIndividual
type: singular unit
type: unit
has dimension: speed dimension
has unit: nautical mile per hour
alternative label: international knot
comment: The international knot is a unit of speed defined as nautical mile per hour.
label: knoop (internationaal) @nl
label: 海里/小时（国际） @zh

length dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 1
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 0
symbol: L
label: lengtedimensie @nl

light year
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 9.4607295E15
alternative label: lightyear
symbol: ly
comment: The light year is a unit of length defined as 9.46073e15 metre.
label: lichtjaar @nl

liquid pint (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 4.731765E-4
alternative label: US liquid pint
alternative label: pint (US liquid)
symbol: liq pt
comment: The US liquid pint is a unit of volume defined as 4.731765e-4 cubic metre.

liquid quart (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 9.463529E-4
alternative label: US liquid quart
alternative label: quart (US liquid)
symbol: liq qt
comment: The US liquid quart is a unit of volume defined as 9.463529e-4 cubic metre.

litre
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.001
alternative label: liter
alternative symbol: L
symbol: l
comment: The litre is a unit of volume defined as 1.0e-3 cubic metre.
label: liter @nl
label: 升 @zh

litre per hour
type: NamedIndividual
type: unit division
has denominator: hour
has numerator: litre
alternative symbol: l h-1
alternative symbol: l·h-1
symbol: l/h
label: liter per uur @nl

mass dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 0
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 0
symbol: M
label: massadimensie @nl

mass of the international prototype of the kilogram
type: NamedIndividual
type: mass

mega
type: NamedIndividual
type: SI prefix
has factor: 1000000.0
symbol: M

megaeuro
type: NamedIndividual
type: prefixed unit
has prefix: mega
has unit: euro

megahertz
type: NamedIndividual
type: prefixed unit
has dimension: frequency dimension
has prefix: mega
has unit: hertz
symbol: MHz
comment: The megahertz is a unit of frequency defined as 1.0e6 hertz.

megaparsec
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: mega
has unit: parsec
symbol: Mpc
comment: The megaparsec is a unit of length defined as 1.0e6 parsec. Gebruikt voor afstanden op de schaal van clusters.

megawatt
type: NamedIndividual
type: prefixed unit
has dimension: power dimension
has prefix: mega
has unit: watt
symbol: MW

metre
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
alternative label: meter
longcomment: The metre is a unit of length defined as the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second. The metre is a base unit in the International System of Units.
symbol: m
comment: The metre is a unit of length defined as the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.
label: meter @nl
label: 米 @zh

metre of mercury
type: NamedIndividual
type: singular unit
type: unit
has dimension: pressure dimension
has unit: pascal
has factor: 133322.0
symbol: m Hg
comment: The metre of mercury is a unit of pressure defined as 133 322 pascal.
label: meter kwik @nl

metre per day
type: NamedIndividual
type: unit division
has denominator: day
has numerator: metre
alternative symbol: m d-1
alternative symbol: m·d-1
symbol: m/d
comment: Metre per day is a unit of speed defined as metre divided by day.
label: meter per dag @nl

metre per second
type: NamedIndividual
type: unit division
has denominator: second
has dimension: speed dimension
has numerator: metre
alternative symbol: m s-1
alternative symbol: mps
alternative symbol: m·s-1
longcomment: Metre per second is a unit of speed defined as metre divided by second. Metre per second is a derived unit in the International System of Units.
symbol: m/s
comment: Metre per second is a unit of speed defined as metre divided by second.
label: meter per seconde @nl

metre per second squared
type: NamedIndividual
type: unit division
has numerator: metre
alternative symbol: m s-2
alternative symbol: m·s-2
longcomment: Metre per second squared is a unit of acceleration defined as metre divided by second squared. Metre per second squared is a derived unit in the International System of Units.
symbol: m/s2
comment: Metre per second squared is a unit of acceleration defined as metre divided by second squared.
label: meter per seconde kwadraat @nl

micro
type: NamedIndividual
type: SI prefix
has factor: 1.0E-6
alternative symbol: u
symbol: μ

microampere
type: NamedIndividual
type: prefixed unit
has dimension: electric current dimension
has prefix: micro
has unit: ampere
symbol: μA
comment: The microampere is a unit of electric current defined as 1.0e-6 ampere.
label: microampère @nl

microbar
type: NamedIndividual
type: prefixed unit
has dimension: pressure dimension
has prefix: micro
has unit: bar
symbol: μbar
comment: The microbar is a unit of pressure defined as 1.0e-6 bar.
label: 微巴 @zh

microgram
type: NamedIndividual
type: prefixed unit
has dimension: mass dimension
has prefix: micro
has unit: gram
symbol: μg
unofficial abbreviation: mcg
unofficial abbreviation: ug
comment: The microgram is a unit of mass defined as 1.0e-6 gram.
label: 微克 @zh

microlitre
type: NamedIndividual
type: prefixed unit
has dimension: volume dimension
has prefix: micro
has unit: litre
symbol: μl
unofficial abbreviation: ul
label: microliter @nl

micrometre
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: micro
has unit: metre
symbol: μm
comment: The micrometre is a unit of length defined as 1.0e-6 metre.
label: micrometer @nl
label: 微米 @zh

micron
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1.0E-6
symbol: μ
comment: The micron is a unit of length defined as 1.0e-6 metre.

micronewton metre
type: NamedIndividual
has dimension: energy dimension
has term 2: metre
alternative symbol: μN·m
symbol: μN m
label: micronewton meter @nl

microsecond
type: NamedIndividual
type: prefixed unit
has dimension: time dimension
has prefix: micro
has unit: second
symbol: μs
label: microseconde @nl

mil (length)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 2.54E-5
alternative label: thou
comment: The mil (length) is a unit of length defined as 2.54e-5 metre.

mile (statute)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1609.344
alternative label: statute mile
symbol: mi
comment: The statute mile is a unit of length defined as 1.609344e3 metre.

mile (statute) per hour
type: NamedIndividual
type: unit division
has denominator: hour
has dimension: speed dimension
has numerator: mile (statute)
alternative symbol: mi h-1
alternative symbol: mi·h-1
symbol: mi/h
comment: Mile (statute) per hour is a unit of speed defined as mile (statute) divided by hour.
label: mijl per uur @nl

mile (US survey)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1609.347
alternative label: US survey mile
comment: The US survey mile is a unit of length defined as 1.609347e3 metre.

milli
type: NamedIndividual
type: SI prefix
has factor: 0.001
symbol: m

milliampere
type: NamedIndividual
type: prefixed unit
has dimension: electric current dimension
has prefix: milli
has unit: ampere
symbol: mA
comment: The milliampere is a unit of electric current defined as 1.0e-3 ampere.
label: milliampère @nl

millibar
type: NamedIndividual
type: prefixed unit
has dimension: pressure dimension
has prefix: milli
has unit: bar
symbol: mbar
comment: The millibar is a unit of pressure defined as 1.0e-3 bar.

milligram
type: NamedIndividual
type: prefixed unit
has dimension: mass dimension
has prefix: milli
has unit: gram
symbol: mg
comment: The milligram is a unit of mass defined as 1.0e-3 gram.
label: 毫克 @zh

milligram RAE
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension

millihertz
type: NamedIndividual
type: prefixed unit
has dimension: frequency dimension
has prefix: milli
has unit: hertz
symbol: mHz
comment: The millihertz is a unit of frequency defined as 1.0e-3 hertz.

millilitre
type: NamedIndividual
type: prefixed unit
has dimension: volume dimension
has prefix: milli
has unit: litre
symbol: ml
label: milliliter @nl

millimetre
type: NamedIndividual
type: prefixed unit
has dimension: length dimension
has prefix: milli
has unit: metre
symbol: mm
comment: The millimetre is a unit of length defined as 1.0e-3 metre.
label: millimeter @nl
label: 毫米 @zh

millimetre of mercury
type: NamedIndividual
type: prefixed unit
has dimension: pressure dimension
has prefix: milli
has unit: metre of mercury
symbol: mm Hg
comment: The millimetre of mercury is a unit of pressure defined as 1.0e-3 metre of mercury.
label: millimeter kwik @nl

millimetre per day
type: NamedIndividual
type: unit division
has denominator: day
has dimension: speed dimension
has numerator: millimetre
alternative symbol: mm d-1
alternative symbol: mm·d-1
symbol: mm/d
comment: Millimetre per day is a unit of speed defined as millimetre divided by day.
label: millimeter per dag @nl

millimetre per hour
type: NamedIndividual
type: unit division
has denominator: hour
has dimension: speed dimension
has numerator: millimetre
alternative symbol: mm h-1
alternative symbol: mm·h-1
symbol: mm/h
comment: Millimetre per hour is a unit of speed defined as millimetre divided by hour.
label: millimeter per uur @nl

millimetre per second
type: NamedIndividual
type: prefixed metre per second (time)
has denominator: second
has dimension: speed dimension
has numerator: millimetre
alternative symbol: mm s-1
alternative symbol: mm·s-1
symbol: mm/s
comment: Millimetre per second is a unit of speed defined as millimetre divided by second.
label: millimeter per seconde @nl

millimetre per second squared
type: NamedIndividual
has numerator: millimetre
alternative symbol: mm s-2
alternative symbol: mm·s-2
symbol: mm/s2
comment: Millimetre per second squared is a unit of acceleration defined as millimetre divided by second squared.
label: millimeter per seconde kwadraat @nl

millinewton metre
type: NamedIndividual
has dimension: energy dimension
has term 2: metre
alternative symbol: mN·m
symbol: mN m
label: millinewton meter @nl

millisecond (angle) per year
type: NamedIndividual
type: unit division
has denominator: year
has dimension: angular speed dimension
symbol: mas/yr
comment: Wordt gebruikt om de waargenomen verandering van de positie van sterren uit te drukken (de proper motion). @nl
label: milliseconde (hoek) per jaar @nl

millisecond
type: NamedIndividual
type: prefixed unit
has dimension: time dimension
has prefix: milli
has unit: second
symbol: ms
label: milliseconde @nl

millivolt
type: NamedIndividual
type: prefixed unit
has dimension: electric potential dimension
has prefix: milli
has unit: volt
symbol: mV

milliwatt
type: NamedIndividual
type: prefixed unit
has dimension: power dimension
has prefix: milli
has unit: watt
symbol: mW

minute
type: NamedIndividual
type: singular unit
type: unit
has dimension: time dimension
has unit: second
has factor: 60.0
symbol: min
comment: The minute (time) is a unit of time defined as 60 second.
label: minuut @nl
label: 分钟 @zh

month
type: NamedIndividual
type: singular unit
type: unit
has dimension: time dimension
LaTeX command: \monthUnit
comment: The month is a unit of time.
label: maand @nl
label: 月 @zh

nano
type: NamedIndividual
type: SI prefix
has factor: 1.0E-9
symbol: n

nautical mile (international)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 1852.0
alternative label: international nautical mile
alternative symbol: M
alternative symbol: NM
alternative symbol: nm
symbol: nmi
comment: The international nautical mile is a unit of length defined as 1852 metre.
label: zeemijl (internationaal) @nl
label: 海里（国际） @zh

nautical mile per hour
type: NamedIndividual
type: unit division
has denominator: hour
has dimension: speed dimension
has numerator: nautical mile (international)
alternative symbol: M h-1
alternative symbol: M·h-1
alternative symbol: NM h-1
alternative symbol: NM/h
alternative symbol: NM·h-1
alternative symbol: nm h-1
alternative symbol: nm/h
alternative symbol: nmi h-1
alternative symbol: nmi·h-1
alternative symbol: nm·h-1
symbol: M/h
symbol: nmi/h
comment: Nautical mile per hour is a unit of speed defined as nautical mile divided by hour.
label: zeemijl per uur @nl

newton
type: NamedIndividual
type: singular unit
type: unit
longcomment: The newton is a unit of force defined as kilogram times metre divided by second squared. The newton is a derived unit in the International System of Units.
symbol: N
comment: The newton is a unit of force defined as kilogram timesmetre divided by second squared.
label: 牛顿 @zh

newton metre
type: NamedIndividual
has dimension: energy dimension
has term 1: newton
has term 2: metre
alternative symbol: N·m
symbol: N m
label: newton meter @nl

newton per square metre
type: NamedIndividual
type: unit division
has denominator: square metre
has dimension: pressure dimension
has numerator: newton
alternative symbol: N m-2
alternative symbol: N·m-2
symbol: N/m2
label: newton per vierkante meter @nl

ohm
type: NamedIndividual
type: singular unit
type: unit
has dimension: electrical resistance dimension
has unit: volt per ampere
longcomment: The ohm is a unit of electrical resistance defined as volt divided by ampere = square metre times kilogram divided by second to the power 3 times ampere squared. The ohm is a derived unit in the International System of Units.
symbol: Ω
comment: The ohm is a unit of electrical resistance defined as volt divided by ampere = square metre times kilogram divided by second to the power 3 times ampere squared.

one
type: NamedIndividual
type: singular unit
type: unit
has dimension: dimensionOne
alternative label: unit one
symbol: 1
comment: Unit one is a unit of dimension one.

ounce (apothecaries')
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 0.03110348
alternative label: apothecaries' ounce
alternative label: ounce (troy)
alternative label: troy ounce
alternative symbol: oz (apoth)
symbol: oz (ap.)
comment: The apothecaries' ounce is a unit of mass defined as 3.110348e-2 kilogram.

ounce (avoirdupois)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 0.02834952
alternative label: avoirdupois ounce
alternative symbol: oz (av.)
alternative symbol: oz avdp
symbol: oz
comment: The avoirdupois ounce is a unit of mass defined as 2.834952e-2 kilogram.

parsec
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 3.08567759E16
symbol: pc
comment: The parsec is a unit of length defined as 3.08567758149137e16 metre.

parts per million
type: NamedIndividual
type: singular unit
type: unit
has dimension: dimensionOne
has unit: one
has factor: 1.0E-6
symbol: ppm
comment: Parts per million is a unit of dimension one defined as 1/1 000 000.

pascal
type: NamedIndividual
type: singular unit
type: unit
has dimension: pressure dimension
has unit: newton per square metre
longcomment: The pascal is a unit of pressure and stress defined as newton divided by square metre = joule divided by cubic metre = kilogram divided by metre second squared. The pascal is a derived unit in the International System of Units.
symbol: Pa
comment: The pascal is a unit of pressure and stress defined as newton divided by square metre = joule divided by cubic metre = kilogram divided by metre second squared.

pascal second
type: NamedIndividual
type: unit multiplication
has dimension: dynamic viscosity dimension
has term 1: pascal
has term 2: second
alternative symbol: Pa·s
symbol: Pa s
label: pascal seconde @nl

peck (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 0.008809768
alternative label: US peck
symbol: pk
comment: The US peck is a unit of volume defined as 8.809768e-3 cubic metre.

pennyweight (Troy)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 0.001555174
alternative label: Troy pennyweight
symbol: dwt
comment: The Troy pennyweight is a unit of mass defined as 1.555174e-3 kilogram.

percent
type: NamedIndividual
type: singular unit
type: unit
has dimension: dimensionOne
has unit: one
has factor: 0.01
LaTeX symbol: \%
symbol: %
comment: The percent is a unit of dimension one defined as 1/100.
label: procent @nl
label: 百分 @zh

peta
type: NamedIndividual
type: SI prefix
has factor: 9.9999999E14
symbol: P

pica (ATA)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: point (ATA)
has factor: 12.0
alternative label: ATA pica
comment: The ATA pica is a unit of length defined as 12 point (ATA).

pica (Postscript)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: point (Postscript)
has factor: 12.0
alternative label: Postscript pica
comment: The Postscript pica is a unit of length defined as 12 point (Postscript).

pica (TeX)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: point (TeX)
has factor: 12.0
alternative label: TeX pica
comment: The TeX pica is a unit of length defined as 12 point (TeX).

pico
type: NamedIndividual
type: SI prefix
has factor: 1.0E-12
symbol: p

pint (imperial)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: millilitre
has factor: 568.2612
alternative label: imperial pint
comment: The pint is a unit of volume defined as 568.26125 millilitre.

point (ATA)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 3.514598E-4
alternative label: ATA point
symbol: pt
comment: The ATA point is a unit of length defined as 0.3514598e-3 metre.

point (Didot)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 3.759E-4
alternative label: Didot point
symbol: pt
comment: The Didot point is a unit of length defined as 0.3759e-3 metre.

point (Postscript)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: inch (international)
has factor: 0.013888889
alternative label: Postscript point
symbol: pt
comment: The Postscript point is a unit of length defined as 0.013888888888888888888888888888889 inch.

point (TeX)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: inch (international)
has factor: 0.013837
alternative label: TeX point
symbol: pt
comment: The TeX point is a unit of length defined as 0.01383700013837000138370001383 inch.

pound (apthecaries')
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 0.3732417
alternative label: apothecaries' pound
alternative label: pound (troy)
alternative label: troy pound
symbol: lb
comment: The apothecaries' pound is a unit of mass defined as 3.732417e-1 kilogram.

pound (avoirdupois)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 0.45359236
alternative label: avoirdupois pound
symbol: lb
comment: The avoirdupois pound is a unit of mass defined as 4.535924e-1 kilogram.

pound sterling
type: NamedIndividual
type: singular unit
type: unit
label: 英镑 @zh

power dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 2
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -3

pressure dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: -1
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -2

quart (imperial)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: litre
has factor: 1.1365
alternative label: imperial quart
comment: The imperial quart is a unit of volume defined as 1.1365 litre.

radian
type: NamedIndividual
type: singular unit
type: unit
has dimension: dimensionOne
longcomment: The radian is a unit of angle defined as the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle. The radian is a derived unit in the International System of Units.
symbol: rad
comment: The radian is a unit of angle defined as the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle.
label: radiaal @nl
label: 弧度 @zh

radian per second
type: NamedIndividual
type: unit division
has denominator: second
has dimension: angular speed dimension
has numerator: radian
alternative symbol: rad s-1
alternative symbol: rad·s-1
symbol: rad/s
label: radiaal per seconde @nl

reciprocal metre
type: NamedIndividual
type: unit exponentiation
has base: metre
has dimension: wavenumber dimension
has exponent: -1
longcomment: Reciprocal metre is a unit of wavenumber defined as 1 divided by metre. Reciprocal metre is a derived unit in the International System of Units.
symbol: m-1
comment: Reciprocal metre is a unit of wavenumber defined as 1 divided by metre.
label: omgekeerder meter @nl

revolution
type: NamedIndividual
type: singular unit
type: unit
has dimension: dimensionOne
has unit: radian
has factor: 6.283185
symbol: r
comment: The revolution is a unit of angle defined as 6.283185 radian.

rod (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 5.02921
alternative label: US rod
alternative label: perch
alternative label: pole
symbol: rd
comment: The US rod is a unit of length defined as 5.029210 metre.

second
type: NamedIndividual
type: singular unit
type: unit
has dimension: time dimension
longcomment: The second is a unit of time defined as the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom. The second is a base unit in the International System of Units.
symbol: s
unofficial abbreviation: sec
comment: The second is a unit of time defined as the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.
label: seconde @nl
label: 秒 @zh

slug
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 14.5939
symbol: slug
comment: The slug is a unit of mass defined as 1.459390e1 kilogram.
label: 金属块 @zh

solar luminosity
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: watt
has factor: 3.839E26
LaTeX symbol: L_{\astrosun}
symbol: L_☉
comment: Solar luminosity is a unit used in astronomy to denote stellar or galactic radiant fluxes (http://en.wikipedia.org/wiki/SolarLuminosity).

solar mass
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 1.98892E30
LaTeX symbol: M_{\astrosun}
symbol: M_☉
comment: Solar mass is a unit used in astronomy to denote stellar or galactic masses (http://en.wikipedia.org/wiki/SolarMass).
label: zonsmassa @nl

solar radius
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 6.9550003E8
LaTeX symbol: R_{\astrosun}
symbol: R_☉
comment: Solar radius is a unit used in astronomy to denote stellar or stellar system radii (http://en.wikipedia.org/wiki/solarRadius).

speed dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 1
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -1
label: snelheiddimensie @nl

square centimetre
type: NamedIndividual
type: square prefixed metre
has base: centimetre
has dimension: area dimension
has exponent: 2
symbol: cm2
label: vierkante centimeter @nl

square kilometre
type: NamedIndividual
type: square prefixed metre
has base: kilometre
has dimension: area dimension
has exponent: 2
symbol: km2
unofficial abbreviation: 10^6 m2
label: vierkante kilometer @nl

square metre
type: NamedIndividual
type: unit exponentiation
has base: metre
has dimension: area dimension
has exponent: 2
longcomment: Square metre is a unit of area defined as the area of a square whose sides measure exactly one metre. Square metre is a derived unit in the International System of Units.
symbol: m2
comment: Square metre is a unit of area defined as the area of a square whose sides measure exactly one metre.
label: vierkante meter @nl
label: 平方米 @zh

square millimetre
type: NamedIndividual
type: square prefixed metre
has base: millimetre
has dimension: area dimension
has exponent: 2
symbol: mm2
label: vierkante millimeter @nl

statampere
type: NamedIndividual
type: singular unit
type: unit
has dimension: electric current dimension
has unit: ampere
has factor: 3.335641E-10
symbol: statA
comment: The statampere is a unit of electric current defined as 3.335641e-10 ampere.
label: statampère @nl

statfarad
type: NamedIndividual
type: singular unit
type: unit
has dimension: capacitance dimension
has unit: farad
has factor: 1.11265E-12
symbol: statF
comment: The statfarad is a unit of capacitance defined as 1.112650e-12 farad.

statohm
type: NamedIndividual
type: singular unit
type: unit
has dimension: electrical resistance dimension
has unit: ohm
has factor: 8.987552E11
symbol: statΩ
comment: The statohm is a unit of electrical resistance defined as 8.987552e11 ohm.

statvolt
type: NamedIndividual
type: singular unit
type: unit
has dimension: electric potential dimension
has unit: volt
has factor: 299.7925
symbol: statV
comment: The statvolt is a unit of electric potential defined as 2.997925e2 volt.

stere
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
comment: The stere is a unit of volume defined as cubic metre.

tablespoon (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 1.478676E-5
alternative label: US tablespoon
comment: The US tablespoon is a unit of volume defined as 1.478676e-5 cubic metre.

teaspoon (US)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 4.928922E-6
alternative label: US teaspoon
comment: The US teaspoon is a unit of volume defined as 4.928922e-6 cubic metre.

tera
type: NamedIndividual
type: SI prefix
has factor: 1.0E12
symbol: T

thermal conductivity dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 1
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 1
has SI thermodynamic temperature dimension exponent: -1
has SI time dimension exponent: -3

thermal resistance dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: -2
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: -1
has SI thermodynamic temperature dimension exponent: 1
has SI time dimension exponent: 3

thermodynamic temperature dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 0
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 1
has SI time dimension exponent: 0
symbol: Θ
label: absolute-temperatuurdimensie @nl

time dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 0
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 1
symbol: T
label: dimensie van tijd @nl

ton (long)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 1016.047
alternative label: long ton
comment: The long ton is a unit of mass defined as 1.016047e3 kilogram.

ton (register)
type: NamedIndividual
type: singular unit
type: unit
has dimension: volume dimension
has unit: cubic metre
has factor: 2.831658
alternative label: register ton
comment: The register ton is a unit of volume defined as 2.831658 cubic metre.

ton (short)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 907.1847
alternative label: short ton
comment: The short ton is a unit of mass defined as 9.071847e2 kilogram.

ton (short assay)
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 0.02916667
alternative label: short assay ton
comment: The short assay ton is a unit of mass defined as 2.916667e-2 kilogram.

ton of refrigeration
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: watt
has factor: 3516.853
comment: The ton of refrigeration is a unit of power defined as 3.516853e3 watt.

tonne
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
has unit: kilogram
has factor: 1000.0
alternative label: metric ton
symbol: t
comment: The tonne is a unit of mass defined as 1000 kilogram.
label: ton @nl
label: 公吨 @zh

torr
type: NamedIndividual
type: singular unit
type: unit
has dimension: pressure dimension
has unit: pascal
has factor: 133.32237
symbol: Torr
comment: The torr is a unit of pressure defined as 1.333224e2 pascal.

unified atomic mass unit
type: NamedIndividual
type: singular unit
type: unit
has dimension: mass dimension
symbol: u
comment: The unified atomic mass unit is a unit of mass defined as 1.660538782(83)e-27 kilogram.

volt
type: NamedIndividual
type: singular unit
type: unit
has dimension: electric potential dimension
has unit: watt per ampere
longcomment: The volt is a unit of electric potential defined as watt divided by ampere = joule divided by coulomb = newton times metre divided by ampere times second = kilogram times square metre divided by ampere times second to the power 3. The volt is a derived unit in the International System of Units.
symbol: V
comment: The volt is a unit of electric potential defined as watt divided by ampere = joule divided by coulomb = newton times metre divided by ampere times second = kilogram times square metre divided by ampere times second to the power 3.

volt per ampere
type: NamedIndividual
type: unit division
has denominator: ampere
has dimension: electrical resistance dimension
has numerator: volt
alternative symbol: V A-1
alternative symbol: V·A-1
symbol: V/A
label: volt per ampère @nl

volume dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 3
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 0
label: volumedimensie @nl

volumetric flow rate dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: 3
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: -1

watt
type: NamedIndividual
type: singular unit
type: unit
has dimension: power dimension
has unit: joule per second
longcomment: The watt is a unit of power defined as joule divided by second = newton times metre divided by second = volt times ampere = kilogram times square metre divided by second to the power 3. The watt is a derived unit in the International System of Units.
symbol: W
comment: The watt is a unit of power defined as joule divided by second = newton times metre divided by second = volt times ampere = kilogram times square metre divided by second to the power 3.

watt per ampere
type: NamedIndividual
type: unit division
has denominator: ampere
has dimension: electric potential dimension
has numerator: watt
alternative symbol: W A-1
alternative symbol: W·A-1
symbol: W/A
label: watt per ampère @nl

watt per metre kelvin
type: NamedIndividual
type: unit division
has dimension: thermal conductivity dimension
has numerator: watt
alternative symbol: W m-1 K-1
alternative symbol: W/(m·K)
alternative symbol: W·m-1·K-1
symbol: W/(m K)
label: watt per meter kelvin @nl

wavenumber dimension
type: NamedIndividual
type: dimension
has SI amount of substance dimension exponent: 0
has SI electric current dimension exponent: 0
has SI length dimension exponent: -1
has SI luminous intensity dimension exponent: 0
has SI mass dimension exponent: 0
has SI thermodynamic temperature dimension exponent: 0
has SI time dimension exponent: 0
label: golfgetaldimensie @nl

week
type: NamedIndividual
type: singular unit
type: unit
has dimension: time dimension
has unit: second
has factor: 604800.0
comment: The week is a unit of time defined as 6.04800e5 second.

yard (international)
type: NamedIndividual
type: singular unit
type: unit
has dimension: length dimension
has unit: metre
has factor: 0.9144
alternative label: international yard
symbol: yd
comment: The international yard is a unit of length defined as 9.144e-1 metre.
label: 码（国际） @zh

year
type: NamedIndividual
type: singular unit
type: unit
has dimension: time dimension
has unit: second
has factor: 3.1536E7
LaTeX command: \yearUnit
alternative symbol: y
alternative symbol: yr
symbol: a
comment: The year is a unit of time defined as 3.1536e7 second.
label: jaar @nl

yocto
type: NamedIndividual
type: SI prefix
has factor: 1.0E-24
symbol: y

yotta
type: NamedIndividual
type: SI prefix
has factor: 1.0E24
symbol: Y

zepto
type: NamedIndividual
type: SI prefix
has factor: 1.0E-21
symbol: z

zetta
type: NamedIndividual
type: SI prefix
has factor: 1.0E21
symbol: Z