Main Entry: ki·lo·gram

Pronunciation: \-ˌgram\

Function: noun

Etymology: French kilogramme, from kilo- + gramme gram

Date: 1797

1 : the base unit of mass in the International System of Units that is equal to the mass of a prototype agreed upon by international convention and that is nearly equal to the mass of 1000 cubic centimeters of water at the temperature of its maximum density — see metric system table
2 : a unit of force or weight equal to the weight of a kilogram mass under a gravitational attraction equal to that of the earth