/ Thesaurus / T Synonyms of tri iodothyronine Find synonyms for: Noun1. tri-iodothyronine, iodothyronineusage: thyronine with three iodine atoms addedNoun1. tri-iodothyronine, iodothyronineusage: thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and brieferWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language