The Collaborative International Dictionary of English v.0.48:

Fluoride \Flu"or*ide\ (? or ?; 104), n. [Cf. F. fluoride.]
   (Chem.)
   A binary compound of fluorine with another element or
   radical.
   [1913 Webster]

   Calcium fluoride (Min.), fluorite, CaF2. See Fluorite.
      [1913 Webster]