/ Dictionary / Index M mosaicist: Meaning and Definition of Find definitions for: mo•sa•i•cist Pronunciation: (mō-zā'u-sist), [key] — n. a person who works in mosaic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mosaicism Mosaic Law Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language