Definition of nahcolite in US English:

nahcolite

noun

Mineralogy
  • Native sodium bicarbonate, which crystallizes in the monoclinic system and occurs as colourless or white prismatic crystals.

Origin

1920s. From nahco- (after NaHCO3, the chemical formula of the mineral) + -lite.

Pronunciation

nahcolite

/ˈnɑːkəlʌɪt/