/ Thesaurus / P Synonyms of polychaeta Find synonyms for: Noun1. Polychaeta, class Polychaeta, classusage: marine annelid wormsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language