/ Dictionary / Index S sarcoma: Meaning and Definition of Find definitions for: sar•co•ma Pronunciation: (sär-kō'mu), [key] — pl. -mas, -ma•ta any of various malignant tumors composed of neoplastic cells resembling embryonic connective tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sarcoma (Thesaurus) sarcology sarcomatosis Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language