/ Dictionary / Index B balloon angioplasty: Meaning and Definition of Find definitions for: balloon' an'gioplasty Pronunciation: [key] — Surg. Surg. a method of opening a clogged or narrowed blood vessel in which a small balloon is introduced into the vessel by means of a catheter and then inflated at the site of blockage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. balloon balloon barrage Related Content Daily Word Quiz: serendipity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language