/ Dictionary / Index V vasodilator: Meaning and Definition of Find definitions for: vas•o•di•la•tor Pronunciation: (vas"ō-dī-lā'tur, -di-, -dī'lā-, vā"zō-), [key] — n. Physiol., Pharm. a nerve or drug that causes vasodilatation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vasodilator (Thesaurus) vasodilatation vasoinhibitor Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language