/ Dictionary / Index M mucedinous: Meaning and Definition of Find definitions for: mu•ced•i•nous Pronunciation: (my-sed'n-us), [key] — adj. of or resembling mold or mildew. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. MU car much Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language