This page provides all possible meanings and translations of the word Cu
Princeton's WordNetRate this definition:(0.00 / 0 votes)
copper, Cu, atomic number 29(noun)
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
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.cu is the country code top-level domain for Cuba.