Definition of orthite in English:

orthite

noun

Mineralogy
  • A silicate of cerium, iron, aluminium, and other metals, occurring as elongated crystals and now regarded as a variety of allanite.

Origin

Early 19th century; earliest use found in Annals of Philosophy. From Swedish orthit from ancient Greek ὀρθός straight + Swedish -it -ite.

Pronunciation

orthite

/ˈɔːθʌɪt/