/ Thesaurus / A Synonyms of amniota Find synonyms for: Noun1. Amniota, vertebrate, craniateusage: higher vertebrates (reptiles, birds and mammals) possessing an amnion during developmentWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language