'Thorite' definitions:

Definition of 'thorite'

From: WordNet
noun
A radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite

Definition of 'Thorite'

From: GCIDE
  • Thorite \Tho"rite\, n. [So called by Berzelius from the Scandinavian god Thor. See Thor.] (Min.) A mineral of a brown to black color, or, as in the variety orangite, orange-yellow. It is essentially a silicate of thorium. [1913 Webster]