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WordNet-Online
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Noun cu has 1 sense
- copper, Cu, atomic number 29 - 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
--1 is a kind of metallic element, metal; conductor
--1 is a substance of
--1 has particulars: blister copper
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