'Wulfenite' definitions:

Definition of 'wulfenite'

From: WordNet
noun
A yellow to orange or brown mineral used as a molybdenum ore

Definition of 'Wulfenite'

From: GCIDE
  • Wulfenite \Wul"fen*ite\, n. [So named after F. X. Wulfen, an Australian mineralogist.] (Min.) Native lead molybdate occurring in tetragonal crystals, usually tabular, and of a bright orange-yellow to red, gray, or brown color; -- also called yellow lead ore. [1913 Webster]