Definition of nacrite in US English:

nacrite

noun

Mineralogy
  • 1A clay mineral related to kaolinite and usually occurring as masses of tiny colourless or white scales.

  • 2A green variety of muscovite. rare. Now historical.

Origin

Early 19th century. From French nacrite from nacre + -ite.

Pronunciation

nacrite

/ˈneɪkrʌɪt/