/ Thesaurus / R Synonyms of rana catesbeiana Find synonyms for: Noun1. bullfrog, Rana catesbeiana, true frog, ranidusage: largest North American frog; highly aquatic with a deep-pitched voiceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language