/ Thesaurus / R Synonyms of rhus toxicodenedron Find synonyms for: Noun1. eastern poison oak, Toxicodendron quercifolium, Rhus quercifolia, Rhus toxicodenedron, poisonous plantusage: poisonous shrub of southeastern United States causing a rash on contactWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language