Breadcrumb Home > Thesaurus > K Synonyms of kg Find synonyms for: Noun 1. kilogram, kg, kilo, metric weight unit, weight unit usage: one thousand grams; the basic unit of mass adopted under the Systeme International d'Unites; "a kilogram is approximately 2.2 pounds" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of kg (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language