copper

Copper is a reddish-gold colored metal that's commonly used in electrical wires and plumbing. Your grandmother might make her famous chocolate caramel sauce in a shiny copper pot.

Before 1983, pennies were 95 percent copper. Today, they're almost entirely zinc (a less expensive metal), coated with a thin copper plating. They look the same, but the older coins are quite a bit heavier. Copper is a good conductor of heat and electricity, which is why it's used for both fancy cookware and wires. You can also use copper for things that have a similar color: "His copper curls make him stand out from the other choir members."

Definitions of copper
  1. 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
    synonyms: Cu, atomic number 29
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    types:
    blister copper
    an impure form of copper having a black blistered surface
    type of:
    metal, metallic element
    any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
    conductor
    a substance that readily conducts e.g. electricity and heat
  2. noun
    a copper penny
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    type of:
    cent, centime, penny
    a coin worth one-hundredth of the value of the basic unit
  3. verb
    coat with a layer of copper
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    type of:
    coat, surface
    put a coat on; cover the surface of; furnish with a surface
  4. noun
    a reddish-brown color resembling the color of polished copper
    synonyms: copper color
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    type of:
    Venetian red, burnt sienna, mahogany, reddish brown, sepia
    a shade of brown with a tinge of red
  5. noun
    any of various small butterflies of the family Lycaenidae having coppery wings
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    types:
    American copper, Lycaena hypophlaeas
    common copper butterfly of central and eastern North America
    type of:
    lycaenid, lycaenid butterfly
    any of various butterflies of the family Lycaenidae
  6. noun
    uncomplimentary terms for a policeman
    synonyms: bull, cop, fuzz, pig
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    type of:
    officer, police officer, policeman
    a member of a police force
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