WordNet-Online
Free dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
Hint:double-click any word to get it searched!
si system
Nounsi system has 1 sense
Systeme International d'Unites, Systeme International, SI system, SI, International System of Units, International System - 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" --1is a kind ofmetric system