/ Thesaurus / G Synonyms of genus apatosaurus Find synonyms for: Noun1. genus Apatosaurus, genus Brontosaurus, reptile genususage: large quadrupedal herbivorous dinosaurs with very long neck and tail; late JurassicWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language