/ Dictionary / Index M mycosis: Meaning and Definition of Find definitions for: my•co•sis Pronunciation: (mī-kō'sis), [key] — n. Pathol. the presence of parasitic fungi in or on any part of the body. the condition caused by the presence of such fungi. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mycosis (Thesaurus) mycorrhiza mycosozin Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language