/ Dictionary / Index M mucosa: Meaning and Definition of Find definitions for: mu•co•sa Pronunciation: (my-kō'su, -zu), [key] — pl. -sae See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mucosa (Thesaurus) mucor mucous Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language