/ Thesaurus / G Synonyms of graminaceous plant Find synonyms for: Noun1. gramineous plant, graminaceous plant, herb, herbaceous plantusage: cosmopolitan herbaceous or woody plants with hollow jointed stems and long narrow leavesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language