/ Dictionary / Index M myoma: Meaning and Definition of Find definitions for: my•o•ma Pronunciation: (mī-ō'mu), [key] — pl. -mas, -ma•ta a tumor composed of muscular tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: myoma (Thesaurus) myology myomectomy Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language