/ Dictionary / Index P pulmonary valve: Meaning and Definition of Find definitions for: pul'monary valve' Pronunciation: [key] — Anat. Anat. a semilunar valve between the pulmonary artery and the right ventricle of the heart that prevents the blood from flowing back into the right ventricle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pulmonary tuberculosis pulmonary vein Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language