Breadcrumb Home > Thesaurus > A Synonyms of argon Find synonyms for: Noun 1. argon, Ar, atomic number 18, chemical element, element, noble gas, inert gas, argonon usage: a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of argon (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: spurious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language