Breadcrumb Home > Thesaurus > B Synonyms of brontosaurus Find synonyms for: Noun 1. apatosaur, apatosaurus, brontosaur, brontosaurus, thunder lizard, Apatosaurus excelsus, sauropod, sauropod dinosaur usage: huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of brontosaurus (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: soupon Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language