Noun | 1. | cuprite - a mineral consisting of cuprous oxide that is a source of copper atomic number 29, copper, Cu - a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition |