/ Thesaurus / P Synonyms of polyplacophore Find synonyms for: Noun1. chiton, coat-of-mail shell, sea cradle, polyplacophore, mollusk, mollusc, shellfishusage: primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous platesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: bibliophile Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language