/ Thesaurus / G Synonyms of genus plethodon Find synonyms for: Noun1. Plethodon, genus Plethodon, amphibian genususage: type genus of the PlethodontidaeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language