/ Dictionary / Index V vasoinhibitor: Meaning and Definition of Find definitions for: vas•o•in•hib•i•tor Pronunciation: (vas"ō-in-hib'i-tur, vā"zō-), [key] — n. Physiol., Pharm. an agent, as a drug, that inhibits the action of the vasomotor nerves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vasodilator vasoligation 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