/ Dictionary / Index M Muscovite: Meaning and Definition of Find definitions for: Mus•co•vite Pronunciation: (mus'ku-vīt"), [key] — n. a native or inhabitant of Moscow. a native or inhabitant of the Grand Duchy of Muscovy. (l.c.)common light-colored mica, essentially KAlSiO(OH), used as an electrical insulator. a Russian. —adj. of, pertaining to, or characteristic of Moscow, Muscovy, or the Muscovites. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: muscovite (Thesaurus) muscovado Muscovy Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language