SI unit
n 1: a complete metric system of units of measurement for
scientists; fundamental quantities are length (meter) and
mass (kilogram) and time (second) and electric current
(ampere) and temperature (kelvin) and amount of matter
(mole) and luminous intensity (candela); "Today the United
States is the only country in the world not totally
committed to the Systeme International d'Unites" [syn:
{Systeme International d'Unites}, {Systeme International},
{SI system}, {SI}, {SI unit}, {International System of
Units}, {International System}]