/ Thesaurus / H Synonyms of hadrosauridae Find synonyms for: Noun1. Hadrosauridae, family Hadrosauridae, reptile familyusage: duck-billed dinosaurs; upper CretaceousWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language