/ Thesaurus / T Synonyms of thyronine Find synonyms for: Noun1. thyronine, amino acid, aminoalkanoic acidusage: a phenolic amino acid of which thyroxine is a derivativeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language