ETYM French kilogramme; pref. kilo- (fr. Greek chilioi a thousand) + gramme. Related to Gram.
(Alternate spelling: kilogramme).
Si unit (symbol kg) of mass equal to 1,000 grams (2.24 lb). It is defined as a mass equal to that of the international prototype, a platinum-iridium cylinder held at the International Bureau of Weights and Measures at Sčvres, France.
One thousand grams; the basic unit of mass adopted under the System International d'Unites; SYN. kg, kilo, key.
Alternate (chiefly British) spelling for kilogram.