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Cu
(redirected from atomic number 29)

    Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.01 sec.
Cu, symbol for the element copper copper, metallic chemical element; symbol Cu [Lat. cuprum=copper]; at. no. 29; at. wt. 63.546; m.p. 1,083.4°C;; b.p. 2,567°C;; sp. gr. 8.96 at 20°C;; valence +1 or +2. Copper and some of its alloys have been used by humanity since the Bronze Age .
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1.(chat)CU - "see you".
2.(communications)cu - Call Unix.
3.(networking)cu - The country code for Cuba.
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