Entry 1 sense Webster, 1913 Nitride /nī'trīd/ · Ni·tride · IPA /ˈnaɪ.tɹaɪd/ 01 n. A binary compound of nitrogen with a more metallic element or radical; as, boric nitride. 1. A binary compound of nitrogen with a more metallic element or radical; as, boric nitride.(Chem.)