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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Pyrothonide :: Pyrothonide (n.) A kind of empyreumatic oil produced by the combustion of textures of hemp, linen, or cotton in a copper vessel, -- formerly used as a remedial agent..

Brass :: Brass (n.) Coin made of copper, brass, or bronze..

Shell :: Shell (n.) An engraved copper roller used in print works.

Copper Works :: Copper works () A place where copper is wrought or manufactured.

Cent :: Cent (n.) A United States coin, the hundredth part of a dollar, formerly made of copper, now of copper, tin, and zinc..

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

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..

Bournonite :: Bournonite (n.) A mineral of a steel-gray to black color and metallic luster, occurring crystallized, often in twin crystals shaped like cogwheels (wheel ore), also massive. It is a sulphide of antimony, lead, and copper..

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

Atacamite :: Atacamite (n.) An oxychloride of copper, usually in emerald-green prismatic crystals..

Farthing :: Farthing (n.) The fourth of a penny; a small copper coin of Great Britain, being a cent in United States currency..

Babbitt Metal :: Babbitt metal () A soft white alloy of variable composition (as a nine parts of tin to one of copper, or of fifty parts of tin to five of antimony and one of copper) used in bearings to diminish friction..

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..

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

Verditer :: Verditer (n.) Either one of two pigments (called blue verditer, and green verditer) which are made by treating copper nitrate with calcium carbonate (in the form of lime, whiting, chalk, etc.) They consist of hydrated copper carbonates analogous to the minerals azurite and malachite..

Kingston Metal :: Kingston metal () An alloy of tin, copper, and mercury, sometimes used for the bearings and packings of machinery..

Turnbull''s Blue :: Turnbull's blue () The double cyanide of ferrous and ferric iron, a dark blue amorphous substance having a coppery luster, used in dyeing, calico printing, etc. Cf. Prussian blue, under Prussian..

Tetrahedrite :: Tetrahedrite (n.) A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also gray copper ore, fahlore, and panabase..

Maravedi :: Maravedi (n.) A small copper coin of Spain, equal to three mils American money, less than a farthing sterling. Also, an ancient Spanish gold coin..

Copperhead :: Copperhead (n.) A poisonous American serpent (Ancistrodon conotortrix), closely allied to the rattlesnake, but without rattles; -- called also copper-belly, and red viper..