Definition of muscovite
1 capitalized a : a native or resident of the ancient principality of Moscow or of the city of Moscowb : russian
2 [muscovy (glass)] : a colorless to pale brown form of mica consisting of a silicate of aluminum and potassium
Origin and Etymology of muscovite
Medieval Latin or New Latin Muscovia, Moscovia Moscow
First Known Use: 1535
Seen and Heard
What made you want to look up muscovite? Please tell us where you read or heard it (including the quote, if possible).