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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Ore :: Ore (n.) The native form of a metal, whether free and uncombined, as gold, copper, etc., or combined, as iron, lead, etc. Usually the ores contain the metals combined with oxygen, sulphur, arsenic, etc. (called mineralizers)..

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..

Magistral :: Magistral (n.) Powdered copper pyrites used in the amalgamation of ores of silver, as at the Spanish mines of Mexico and South America..

Malachite :: Malachite (n.) Native hydrous carbonate of copper, usually occurring in green mammillary masses with concentric fibrous structure..

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

Uranite :: Uranite (n.) A general term for the uranium phosphates, autunite, or lime uranite, and torbernite, or copper uranite..

Touch-needle :: Touch-needle (n.) A small bar of gold and silver, either pure, or alloyed in some known proportion with copper, for trying the purity of articles of gold or silver by comparison of the streaks made by the article and the bar on a touchstone..

Glance :: Glance (n.) A name given to some sulphides, mostly dark-colored, which have a brilliant metallic luster, as the sulphide of copper, called copper glance..

Copperas :: Copperas (n.) Green vitriol, or sulphate of iron; a green crystalline substance, of an astringent taste, used in making ink, in dyeing black, as a tonic in medicine, etc. It is made on a large scale by the oxidation of iron pyrites. Called also ferrous sulphate..

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..

Matte :: Matte (n.) A partly reduced copper sulphide, obtained by alternately roasting and melting copper ore in separating the metal from associated iron ores, and called coarse metal, fine metal, etc., according to the grade of fineness. On the exterior it is dark brown or black, but on a fresh surface is yellow or bronzy in color..

Erinite :: Erinite (n.) A hydrous arseniate of copper, of an emerald-green color; -- so called from Erin, or Ireland, where it occurs..

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.

Cuprum :: Cuprum (n.) Copper.

Li :: Li (n.) A Chinese copper coin; a cash. See Cash.

Coppery :: Coppery (a.) Mixed with copper; containing copper, or made of copper; like copper..

Copper :: 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..

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

Rove :: Rove (n.) A copper washer upon which the end of a nail is clinched in boat building.

Bugle :: Bugle (n.) A copper instrument of the horn quality of tone, shorter and more conical that the trumpet, sometimes keyed; formerly much used in military bands, very rarely in the orchestra; now superseded by the cornet; -- called also the Kent bugle..