/ Dictionary / Index E extravascular: Meaning and Definition of Find definitions for: ex•tra•vas•cu•lar Pronunciation: (ek"stru-vas'kyu-lur), [key] — adj. Anat. situated outside a blood vessel or vessels. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. extravasation extravehicular Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language