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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Cable :: Cable (n.) A rope of steel wire, or copper wire, usually covered with some protecting or insulating substance; as, the cable of a suspension bridge; a telegraphic cable..

Copperhead :: Copperhead (n.) A nickname applied to a person in the Northern States who sympathized with the South during the Civil War.

Copper :: Copper (n.) A vessel, especially a large boiler, made of copper..

Bornite :: Bornite (n.) A valuable ore of copper, containing copper, iron, and sulphur; -- also called purple copper ore (or erubescite), in allusion to the colors shown upon the slightly tarnished surface..

Oroide :: Oroide (n.) An alloy, chiefly of copper and zinc or tin, resembling gold in color and brilliancy..

Cuprous :: Cuprous (a.) Of, pertaining to, or derived from, copper; containing copper; -- said of those compounds of copper in which this element is present in its highest proportion..

Para :: Para (n.) A piece of Turkish money, usually copper, the fortieth part of a piaster, or about one ninth of a cent..

Mill :: Mill (n.) A hardened steel roller having a design in relief, used for imprinting a reversed copy of the design in a softer metal, as copper..

Bell Metal :: Bell metal () A hard alloy or bronze, consisting usually of about three parts of copper to one of tin; -- used for making bells..

Whitneyite :: Whitneyite (n.) an arsenide of copper from Lake Superior.

Aurichalcite :: Aurichalcite (n.) A hydrous carbonate of copper and zinc, found in pale green or blue crystalline aggregations. It yields a kind of brass on reduction..

Stycerin :: Styca (n.) An anglo-Saxon copper coin of the lowest value, being worth half a farthing..

Malay :: Malay (n.) One of a race of a brown or copper complexion in the Malay Peninsula and the western islands of the Indian Archipelago.

Ground :: Ground (v. t.) To cover with a ground, as a copper plate for etching (see Ground, n., 5); or as paper or other materials with a uniform tint as a preparation for ornament..

Eliquation :: Eliquation (n.) The process of separating a fusible substance from one less fusible, by means of a degree of heat sufficient to melt the one and not the other, as an alloy of copper and lead; liquation..

Libethenite :: Libethenite (n.) A mineral of an olive-green color, commonly in orthorhombic crystals. It is a hydrous phosphate of copper..

Pice :: Pice (n.) A small copper coin of the East Indies, worth less than a cent..

Pfennig :: Pfennig (n.) A small copper coin of Germany. It is the hundredth part of a mark, or about a quarter of a cent in United States currency..

Triens :: Triens (n.) A Roman copper coin, equal to one third of the as. See 3d As, 2..

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