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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Cupriferous :: Cupriferous (a.) Containing copper; as, cupriferous silver..

Niccolite :: Niccolite (n.) A mineral of a copper-red color and metallic luster; an arsenide of nickel; -- called also coppernickel, kupfernickel..

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..

Atramentarious :: Atramentarious (a.) Like ink; suitable for making ink. Sulphate of iron (copperas, green vitriol) is called atramentarious, as being used in making ink..

Galvanography :: Galvanography (n.) A method of producing by means of electrotyping process (without etching) copperplates which can be printed from in the same manner as engraved plates.

Polybasite :: Polybasite (n.) An iron-black ore of silver, consisting of silver, sulphur, and antimony, with some copper and arsenic..

Similor :: Similor (n.) An alloy of copper and zinc, resembling brass, but of a golden color..

Verdigris :: Verdigris (n.) The green rust formed on copper.

Phosphor-bronze :: Phosphor-bronze (n.) A variety of bronze possessing great hardness, elasticity, and toughness, obtained by melting copper with tin phosphide. It contains one or two per cent of phosphorus and from five to fifteen per cent of tin..

Copperplate :: Copperplate (n.) A plate of polished copper on which a design or writing is engraved.

Copper :: Copper (n.) A coin made of copper; a penny, cent, or other minor coin 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..

Packfong :: Packfong (n.) A Chinese alloy of nickel, zinc, and copper, resembling German silver..

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

Bush :: Bush (n.) A piece of copper, screwed into a gun, through which the venthole is bored..

Mezzotint :: Mezzotint (n.) A manner of engraving on copper or steel by drawing upon a surface previously roughened, and then removing the roughness in places by scraping, burnishing, etc., so as to produce the requisite light and shade. Also, an engraving so produced..

Ehlite :: Ehlite (n.) A mineral of a green color and pearly luster; a hydrous phosphate of copper.

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

Copper-faced :: Copper-faced (a.) Faced or covered with copper; as, copper-faced type..

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..