/ Dictionary / Index M myc-: Meaning and Definition of Find definitions for: myc- Pronunciation: [key] var. ofbefore a vowel: mycelium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. myatrophy mycelium Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language