Definition of plombierite in English:

plombierite

noun

Mineralogy
  • A mineral consisting of a hydrated silicate of calcium, Ca₅H₂Si₆O₁₈·6H₂O, which belongs to the orthorhombic crystal system and occurs as white to reddish translucent gelatinous masses that harden on exposure to air.

Origin

Mid 19th century; earliest use found in Henry Watts (1815–1884), chemist. From French plombièrite from the name of Plombières-les-Bains + French -ite.

Pronunciation

plombierite

/ˈplɒmbɪərʌɪt/