/ Thesaurus / R Synonyms of rheum palmatum Find synonyms for: Noun1. Chinese rhubarb, Rheum palmatum, rhubarb, rhubarb plantusage: long used for laxative propertiesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language