MUSCOVITE Meaning of MUSCOVITE in English [ 'mʌskəvʌɪt ]■ noun a silver-grey form of mica occurring in many rocks.OriginC19: from obs. Muscovy glass (in the same sense) + -ite 1 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004