a brownish-black mineral consisting of a ferrous chromic oxide in cubic crystalline form, occurring principally in basic igneous rocks: the only commercial source of chromium and its compounds. Formula: FeCr2O4
2.
a salt of chromous acid
chromite in American English
(ˈkroʊˌmaɪt)
noun
a hard, black mineral, FeCr2O4, the chief ore of chromium