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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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..

Coppered :: Coppered (imp. & p. p.) of Coppe.

Chalcocite :: Chalcocite (n.) Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster..

Coppersmith :: Coppersmith (n.) One whose occupation is to manufacture copper utensils; a worker in copper.

Venus :: Venus (n.) The metal copper; -- probably so designated from the ancient use of the metal in making mirrors, a mirror being still the astronomical symbol of the planet Venus..

Venereal :: Venereal (a.) Consisting of, or pertaining to, copper, formerly called by chemists Venus..

Pinchbeck :: Pinchbeck (n.) An alloy of copper and zinc, resembling gold; a yellow metal, composed of about three ounces of zinc to a pound of copper. It is much used as an imitation of gold in the manufacture of cheap jewelry..

Coquimbite :: Coquimbite (n.) A mineral consisting principally of sulphate of iron; white copperas; -- so called because found in the province of Coquimbo, Chili..

Melaconite :: Melaconite (n.) An earthy black oxide of copper, arising from the decomposition of other ores..

Minargent :: Minargent (n.) An alloy consisting of copper, nickel, tungsten, and aluminium; -- used by jewelers..

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..

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.

Gorget :: Gorget (n.) A small ornamental plate, usually crescent-shaped, and of gilded copper, formerly hung around the neck of officers in full uniform in some modern armies..

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..

Tough-pitch :: Tough-pitch (n.) The exact state or quality of texture and consistency of well reduced and refined copper.

Misy :: Misy (n.) An impure yellow sulphate of iron; yellow copperas or copiapite.

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..

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..

Enargite :: Enargite (n.) An iron-black mineral of metallic luster, occurring in small orthorhombic crystals, also massive. It contains sulphur, arsenic, copper, and often silver..

Mannheim Gold :: Mannheim gold () A kind of brass made in imitation of gold. It contains eighty per cent of copper and twenty of zinc.