/ Dictionary / Index V vasodilatation: Meaning and Definition of Find definitions for: vas•o•dil•a•ta•tion Pronunciation: (vas"ō-dil"u-tā'shun, -dī"lu-, vā"zō-), [key] — n. Physiol. dilatation of the blood vessels, as by the action of a nerve. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vasodepressor vasodilator Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language