kilogram
Cross references: 1. metric system kilo.gram \'kil-*-.gram\ n [F kilogramme, fr. kilo- + gramme gram] 1: the basic metric unit of mass and weight equal to the mass of a platinum -iridium cylinder kept at the International Bureau of Weights and Measures near Paris and nearly equal to 1000 cubic centimeters of water at the temperature of its maximum density 2: a unit of force equal to the weight of a kilogram under standard gravity