/ Thesaurus / O Synonyms of order belemnoidea Find synonyms for: Noun1. Belemnoidea, order Belemnoidea, animal orderusage: order of extinct dibranchiate cephalopods related to the surviving spirulasWordNet 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