/ Dictionary / Index A angiosarcoma: Meaning and Definition of Find definitions for: an•gi•o•sar•co•ma Pronunciation: (an"jē-ō-sär-kō'mu), [key] — pl. -mas, -ma•ta malignant overgrowth of vascular tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: angiosarcoma (Thesaurus) angioplasty angiosperm Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language