/ Thesaurus / O Synonyms of order stereospondyli Find synonyms for: Noun1. Stereospondyli, order Stereospondyli, animal orderusage: formerly a suborder of Stegocephalia; amphibia having vertebrae whose component elements are fused into a single piece; "most vertebrates are stereospondylous"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language