/ Dictionary / Index M molluscum: Meaning and Definition of Find definitions for: mol•lus•cum Pronunciation: (mu-lus'kum), [key] — pl. -ca any of various skin conditions characterized by soft, rounded tumors. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: molluscum (Thesaurus) molluscoid mollusk 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