The Collaborative International Dictionary of English v.0.48:
Nitride \Ni"tride\ (? or ?), n. [fromNitrogen.] (Chem.) A binary compound of nitrogen with a more metallic element or radical; as, boric nitride. [1913 Webster]WordNet (r) 3.0 (2006):
nitride n 1: a compound containing nitrogen and a more electropositive element (such as phosphorus or a metal)