Breadcrumb Home > Thesaurus > O Synonyms of ornithischian Find synonyms for: Noun 1. ornithischian, ornithischian dinosaur, dinosaur usage: herbivorous dinosaur with a pelvis like that of a bird WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of ornithischian (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: plutocracy Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language