Breadcrumb Home > Thesaurus > M Synonyms of methionine Find synonyms for: Noun 1. methionine, essential amino acid usage: a crystalline amino acid containing sulfur; found in most proteins and essential for nutrition WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of methionine (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: tintinnabulation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language