/ Thesaurus / N Synonyms of notostraca Find synonyms for: Noun1. Notostraca, order Notostraca, animal orderusage: small freshwater crustaceans with a shield-shaped carapaceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language