Breadcrumb Home > Thesaurus > P Synonyms of proteinaceous Find synonyms for: Adjective1. proteinaceoususage: relating to or of the nature of proteinWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language