Definition of nasonite in English:

nasonite

noun

Mineralogy
  • A trigonal silicate and chloride of calcium and lead, Ca₄Pb₆(Si₂O₇)₃Cl₂, which forms prismatic crystals and occurs as white or grey granular masses.

Origin

Late 19th century. From the name of Frank Lewis Nason, U.S. geologist formerly with the Geological Survey of New Jersey + -ite.

Pronunciation

nasonite

/ˈneɪsənʌɪt/