Source : Webster's Revised Unabridged Dictionary (1913)

Nitride \Ni"tride\ (? or ?), n. [from{Nitrogen}.] (Chem.)
   A binary compound of nitrogen with a more metallic element or
   radical; as, boric nitride.

Source : WordNet®

nitride
     n : a compound containing nitrogen and a more electropositive
         element (such as phosphorus or a metal)