English definition of Copper

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Definition of copper

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Copper (n.) A common metal of a reddish color, both ductile and malleable, and very tenacious. It is one of the best conductors of heat and electricity. Symbol Cu. Atomic weight 63.3. It is one of the most useful metals in itself, and also in its alloys, brass and bronze..

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Wet :: Wet (superl.) Employing, or done by means of, water or some other liquid; as, the wet extraction of copper, in distinction from dry extraction in which dry heat or fusion is employed..

Tula Metal :: Tula metal () An alloy of silver, copper, and lead made at Tula in Russia..

Copperworm :: Copperworm (n.) The teredo; -- so called because it injures the bottoms of vessels, where not protected by copper..

Skillet :: Skillet (n.) A small vessel of iron, copper, or other metal, with a handle, used for culinary purpose, as for stewing meat..

Chalcographist :: Chalcographist (n.) An engraver on copper or brass; hence, an engraver of copper plates for printing upon paper..

Copeck :: Copeck (n.) A Russian copper coin. See Kopeck.

Pewter :: Pewter (n.) A hard, tough, but easily fusible, alloy, originally consisting of tin with a little lead, but afterwards modified by the addition of copper, antimony, or bismuth..

Cupreous :: Cupreous (a.) Consisting of copper or resembling copper; coppery.

Zincoid :: Zincoid (a.) Pertaining to, or resembling, zinc; -- said of the electricity of the zincous plate in connection with a copper plate in a voltaic circle; also, designating the positive pole..

Kreutzer :: Kreutzer (n.) A small copper coin formerly used in South Germany; also, a small Austrian copper coin..

Fulguration :: Fulguration (n.) The sudden brightening of a fused globule of gold or silver, when the last film of the oxide of lead or copper leaves its surface; -- also called blick..

Plack :: Plack (n.) A small copper coin formerly current in Scotland, worth less than a cent..

Copper :: Copper (n.) the boilers in the galley for cooking; as, a ship's coppers..

Centesimo :: Centesimo (n.) A copper coin of Italy and Spain equivalent to a centime.

Verdigris :: Verdigris (n.) A green poisonous substance used as a pigment and drug, obtained by the action of acetic acid on copper, and consisting essentially of a complex mixture of several basic copper acetates..

Saunders-blue :: Saunders-blue (n.) A kind of color prepared from calcined lapis lazuli; ultramarine; also, a blue prepared from carbonate of copper..

Copper-bottomed :: Copper-bottomed (a.) Having a bottom made of copper, as a tin boiler or other vessel, or sheathed with copper, as a ship..

Turacin :: Turacin (n.) A red or crimson pigment obtained from certain feathers of several species of turacou; whence the name. It contains nearly six per cent of copper.

Gong :: Gong (n.) An instrument, first used in the East, made of an alloy of copper and tin, shaped like a disk with upturned rim, and producing, when struck, a harsh and resounding noise..

Cuprum :: Cuprum (n.) Copper.