a. [ From Cuprum. ] (Chem.) Of, pertaining to, or derived from, copper; containing copper; -- said of those compounds of copper in which this element is present in its lowest proportion. [ 1913 Webster ]
a. [ Cuprum + -ferous. ] Containing copper;
n. (Min.) The red oxide of copper; red copper; an important ore of copper, occurring massive and in isometric crystals. [ 1913 Webster ]