absolute scale
A temperature scale whose zero corresponds to absolute zero such as the Kelvin scale or Rankine scale.
Metrology and inspection
150 entries in this trade.
angstrom
A unit of length equal to 10⁻¹⁰ meters (that is, one ten-billionth of a meter), approximately the size of an atom, and denoted by the symbol Å, used especially to measure the wavelength of electromagnetic radiation or distances between atoms.
attoampere
An SI unit of electric current equal to 10⁻¹⁸ amperes. Symbol: aA
attogram
An SI unit of mass equal to 10⁻¹⁸ grams. Symbol: ag
attohertz
An SI unit of frequency equal to 10⁻¹⁸ hertz.
attojoule
An SI unit of energy, work, and heat equal to 10⁻¹⁸ joules. Symbol: aJ
attokatal
An SI unit of catalytic activity equal to 10⁻¹⁸ katals. Symbol: a
attolitre
An SI unit of fluid measure equal to 10⁻¹⁸ litres; alternative spelling of attoliter.
attometre
An SI unit of length equal to 10⁻¹⁸ metres. Symbol: am
attoparsec
A unit of measure of 10⁻¹⁸ parsecs, or about 3.085 centimetres (1.215 inches).
attosecond
An SI unit of time equal to 10⁻¹⁸ seconds. Symbol: as
attowatt
An SI unit of power equal to 10⁻¹⁸ watts. Symbol: aW
Celsius
Ellipsis of degree Celsius.
centiamp
An SI unit of electric current equal to 10⁻² amperes. Symbol: cA
centiampere
An SI unit of electric current equal to 10⁻² amperes. Symbol: cA
centigram
An SI unit of mass equal to 10⁻² grams. Symbol: cg
centikatal
An SI unit of catalytic activity equal to 10⁻² katals. Symbol: c
centimetre
An SI unit of length equal to 10⁻² metres. Symbol: cm
centimole
An SI unit of amount of substance equal to 10⁻² moles. Symbol: cmol
centisecond
An SI unit of time equal to 10⁻² seconds. Symbol: cs
city bus
An informal approximate unit of measure.
decaampere
An SI unit of current equal to 10¹ amperes. Symbol: daA
decagram
An SI unit of mass equal to 10¹ grams. Symbol: dag
decakatal
An SI unit of catalytic activity equal to 10¹ katals. Symbol: da
decametre
An SI unit of length equal to 10¹ metres. Symbol: dam
decasecond
An SI unit of time equal to 10¹ seconds. Symbol: das
deciamp
An SI unit of electrical current equal to 10⁻¹ amps. Symbol: d
deciampere
An SI unit of electrical current equal to 10⁻¹ amperes. Symbol: dA
decigram
An SI unit of mass equal to 10⁻¹ grams. Symbol: dg
decikatal
An SI unit of catalytic activity equal to 10⁻¹ katals. Symbol: d
decilitre
An SI unit of fluid equal to 10⁻¹ liters. Symbol: dl.
decimetre
An SI unit of length equal to 10⁻¹ metres. Symbol: dm
decisecond
An SI unit of time equal to 10⁻¹ seconds. Symbol: ds
deviation
The signed difference between a value and its reference value.
EFB
Initialism of electrostatic force balance.
exajoule
An SI unit of energy equal to 10¹⁸ joules. Symbol: EJ
exakatal
An SI unit of catalytic activity equal to 10¹⁸ katals. Symbol: E
exametre
An SI unit of length equal to 10¹⁸ metres. Symbol: Em
exanewton
An SI unit of force equal to 10¹⁸ newtons.
exasecond
An SI unit of time equal to 10¹⁸ seconds. Symbol: Es. (= 31 709 800 000 years, which is more time than has elapsed in the Universe, that is, since the Big Bang [about 13 800 000 000 years].)
femtobecquerel
An SI unit of radioactive activity equal to 10⁻¹⁵ becquerels. Symbol: f
femtobel
An SI unit of relative power equal to 10⁻¹⁵ bels. Symbol: f
femtocandela
An SI unit of luminous intensity equal to 10⁻¹⁵ candelas. Symbol: fcd
femtocoulomb
An SI unit of electric charge equal to 10⁻¹⁵ coulombs. Symbol: f
femtofarad
An SI unit of electrical capacitance equal to 10⁻¹⁵ farads. Symbol: fF
femtogram
An SI unit of mass equal to 10⁻¹⁵ grams. Symbol: fg
femtojoule
An SI unit of energy, work, and heat equal to 10⁻¹⁵ joules. Symbol: fJ
femtokatal
An SI unit of catalytic activity equal to 10⁻¹⁵ katals. Symbol: f
femtometre
An SI unit of length equal to 10⁻¹⁵ metres. Symbol: fm
femtosecond
An SI unit of time equal to 10⁻¹⁵ seconds. Symbol: fs
gigaampere
An SI unit of current equal to 10⁹ amperes. Symbol: GA
gigagram
An SI unit of mass equal to 10⁹ grams. Symbol: Gg
gigajoule
An SI unit of energy equal to 10⁹ joules. Symbol: GJ
gigakatal
An SI unit of catalytic activity equal to 10⁹ katals. Symbol: G
giganewton
An SI unit of force equal to 10⁹ newtons. Symbol: GN
gigasecond
An SI unit of time equal to 10⁹ seconds. Symbol: Gs. (= 31.7098 years)
hectoamp
An SI unit of electrical current equal to 10² amps. Symbol: h
hectoampere
An SI unit of electrical current equal to 10² amperes. Symbol: hA
hectobecquerel
An SI unit of radiation equal to 10² becquerels. Symbol: h
hectogram
An SI unit of mass equal to 10² grams. Symbol: hg