/ Dictionary / Index M mycotoxin: Meaning and Definition of Find definitions for: my•co•tox•in Pronunciation: (mī"kō-tok'sin), [key] — n. Pathol. a toxin produced by a fungus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mycotoxin (Thesaurus) mycotoxicosis mycotrophy 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