/ Thesaurus / P Synonyms of plantago psyllium Find synonyms for: Noun1. fleawort, psyllium, Spanish psyllium, Plantago psyllium, plantainusage: plantain of Mediterranean regions whose seeds swell and become gelatinous when moist and are used as a mild laxativeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language