/ Thesaurus / P Synonyms of prevacid Find synonyms for: Noun1. lansoprazole, Prevacid, acidusage: antacid (trade name Prevacid) that suppresses acid secretion in the stomachWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language