/ Thesaurus / W Synonyms of white rhinoceros Find synonyms for: Noun1. white rhinoceros, Ceratotherium simum, Diceros simus, rhinoceros, rhinousage: large light-grey African rhinoceros having two horns; endangered; sometimes placed in genus DicerosWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language