/ Thesaurus / T Synonyms of trachodon Find synonyms for: Noun1. trachodon, trachodont, hadrosaur, hadrosaurus, duck-billed dinosaurusage: large duck-billed dinosaur of the Cretaceous periodWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language