/ Dictionary / Index M mycetism: Meaning and Definition of Find definitions for: my•ce•tism Pronunciation: (mī'si-tiz"um), [key] — n. poisoning due to mushrooms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. -mycetes mycetoma Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language