/ Thesaurus / P Synonyms of pulmonary valve Find synonyms for: Noun1. pulmonary valve, semilunar valveusage: a semilunar valve between the right ventricle and the pulmonary artery; prevents blood from flowing from the artery back into the heartWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language