/ Dictionary / Index M mastopathy: Meaning and Definition of Find definitions for: mas•top•a•thy Pronunciation: (ma-stop'u-thē), [key] — pl. -thies. any disease of the breast. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mastopathy (Thesaurus) mastoid process mastopexy Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language