9 letters · 16 points in Scrabble
noun a colorless or pale brown mica with potassium
noun a resident of Moscow
adjective of or relating to the residents of Moscow
origin1535. From Latin Moscovita (“resident of Moscow or Muscovy, Russian”), also Muscovita, Moschovita, from Moscovia or Muscovia (“Muscovy”) + -ita.
Etymology from Wiktionary, CC BY-SA 3.0