Breadcrumb Home > Thesaurus > C Synonyms of citrulline Find synonyms for: Noun1. citrulline, amino acid, aminoalkanoic acidusage: an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginineWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of citrulline (Dictionary) ✖ Related Content Daily Word Quiz: deracinate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language