Breadcrumb Home > Thesaurus > N Synonyms of nitre Find synonyms for: Noun 1. potassium nitrate, saltpeter, saltpetre, niter, nitre, nitrate usage: (KNO3) used especially as a fertilizer and explosive WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of nitre (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: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language