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Liroconite :: Liroconite (n.) A hydrated arseniate of copper, occurring in obtuse pyramidal crystals of a sky-blue or verdigris-green color..

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..

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..

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

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

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.

Money :: Money (n.) A piece of metal, as gold, silver, copper, etc., coined, or stamped, and issued by the sovereign authority as a medium of exchange in financial transactions between citizens and with government; also, any number of such pieces; coin..

Autotypography :: Autotypography (n.) A process resembling nature printing, by which drawings executed on gelatin are impressed into a soft metal plate, from which the printing is done as from copperplate..

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

Vodanium :: Vodanium (n.) A supposed element, afterward found to be a mixture of several metals, as copper, iron, lead, nickel, etc..

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

Alloy :: Alloy (v. t.) To reduce the purity of by mixing with a less valuable substance; as, to alloy gold with silver or copper, or silver with copper..

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..

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

Copper-nickel :: Copper-nickel (n.) Niccolite.

Chalcography :: Chalcography (n.) The act or art of engraving on copper or brass, especially of engraving for printing..

Penny :: Penny (n.) An English coin, formerly of copper, now of bronze, the twelfth part of an English shilling in account value, and equal to four farthings, or about two cents; -- usually indicated by the abbreviation d. (the initial of denarius)..

Plack :: Plack (n.) A small copper coin formerly current in Scotland, worth less than a cent..

Coppering :: Coppering (n.) An envelope or covering of copper.

Vauquelinite :: Vauquelinite (n.) Chromate of copper and lead, of various shades of green..

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