Cuprite is a copper oxide mineral composed of copper and oxygen. It is an important ORE of copper and can be found in the form of red crystals or granular masses. The two crossword solutions for cuprite are 'ores' (4 letters) and 'ORE' (3 letters). Ores are rocks or minerals from which metals can be extracted, and ORE is a rock or mineral that contains a valuable metal or mineral. Cuprite is an ORE of copper, meaning it contains copper that can be extracted.