Definition of allite in US English:

allite

noun

Geology
  • A lateritic soil or residual rock that is rich in alumina; (originally, now disused) specifically one in which the ratio of silica to alumina by weight is below 4:3.

Origin

1930s. From al- + l- + -ite, after German Allit; compare siallite.

Pronunciation

allite

/ˈalʌɪt/