/ Thesaurus / P Synonyms of polyodon spathula Find synonyms for: Noun1. paddlefish, duckbill, Polyodon spathula, ganoid, ganoid fishusage: primitive fish of the Mississippi valley having a long paddle-shaped snoutWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language