muscovite

Noun

a colorless or pale brown mica with potassium
a resident of Moscow
A pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula KAl₂(Si₃Al)O₁₀(OH,F)₂; used as an electrical insulator etc.

Adjective

of or relating to the residents of Moscow
- "Muscovite street dealers"

Origin / Etymology

In 1850 from Muscovy glass + -ite, from the province Muscovy in Russia. Named by James Dwight Dana.

Scrabble Score: 16

muscovite: valid Scrabble (US) TWL word
muscovite: not valid in Scrabble (MW) Merriam-Webster Dictionary
muscovite: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 20

muscovite is a valid Words With Friends word