Definition of ottrelite in English:

ottrelite

noun

Mineralogy
  • A hydroxide and aluminosilicate of magnesium, ferrous iron, and manganese which occurs as greyish to black crystalline scales.

Origin

Mid 19th century (in an earlier sense). From Ottré (formerly also Ottrez), the name of a village in Belgium + -lite. In sense 1 after German Ottrelith.

Pronunciation

ottrelite

/ˈɒtrəlʌɪt/