/ Dictionary / Index M Mollusca: Meaning and Definition of Find definitions for: Mol•lus•ca Pronunciation: (mu-lus'ku), [key] — n. the phylum comprising the mollusks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mollusca (Thesaurus) mollisol molluscoid Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language