'Vanadinite' definitions:

Definition of 'vanadinite'

(from WordNet)
noun
A mineral consisting of chloride and vanadate of lead; a source of vanadium

Definition of 'Vanadinite'

From: GCIDE
  • Vanadinite \Va*nad"i*nite\, n. (Min.) A mineral occurring in yellowish, brownish, and ruby-red hexagonal crystals. It consists of lead vanadate with a small proportion of lead chloride. [1913 Webster]