1. 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
   "The old building still had its original Cu wiring";
   - copper, atomic number 29

Type of: conductor, metal, metallic element

Part of: bornite, brass, bronze, chalcocite, chalcopyrite, copper glance, copper pyrites, cuprite, malachite, peacock ore

Encyclopedia: Cu