/ Thesaurus Find synonyms for: Noun1. coelenterate, cnidarian, invertebrateusage: radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa formsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.See also: coelenterate (Dictionary) Related Content Daily Word Quiz: furtive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index