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Triens :: Triens (n.) A Roman copper coin, equal to one third of the as. See 3d As, 2..

Turquois :: Turquois (n.) A hydrous phosphate of alumina containing a little copper; calaite. It has a blue, or bluish green, color, and usually occurs in reniform masses with a botryoidal surface..

Caledonite :: Caledonite (n.) A hydrous sulphate of copper and lead, found in some parts of Caledonia or Scotland..

Copperworm :: Copperworm (n.) The teredo; -- so called because it injures the bottoms of vessels, where not protected by copper..

Pewter :: Pewter (n.) A hard, tough, but easily fusible, alloy, originally consisting of tin with a little lead, but afterwards modified by the addition of copper, antimony, or bismuth..

Daguerreotype :: Daguerreotype (n.) An early variety of photograph, produced on a silver plate, or copper plate covered with silver, and rendered sensitive by the action of iodine, or iodine and bromine, on which, after exposure in the camera, the latent image is developed by the vapor of mercury..

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..

Ormolu :: Ormolu (n.) A variety of brass made to resemble gold by the use of less zinc and more copper in its composition than ordinary brass contains. Its golden color is often heightened by means of lacquer of some sort, or by use of acids. Called also mosaic gold..

Whitneyite :: Whitneyite (n.) an arsenide of copper from Lake Superior.

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..

Bronze :: Bronze (a.) An alloy of copper and tin, to which small proportions of other metals, especially zinc, are sometimes added. It is hard and sonorous, and is used for statues, bells, cannon, etc., the proportions of the ingredients being varied to suit the particular purposes. The varieties containing the higher proportions of tin are brittle, as in bell metal and speculum metal..

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..

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

Norwegium :: Norwegium (n.) A rare metallic element, of doubtful identification, said to occur in the copper-nickel of Norway..

Vitriol :: Vitriol (n.) A sulphate of any one of certain metals, as copper, iron, zinc, cobalt. So called on account of the glassy appearance or luster..

Condurrite :: Condurrite (n.) A variety of the mineral domeykite, or copper arsenide, from the Condurra mine in Cornwall, England..

Fulguration :: Fulguration (n.) The sudden brightening of a fused globule of gold or silver, when the last film of the oxide of lead or copper leaves its surface; -- also called blick..

Libethenite :: Libethenite (n.) A mineral of an olive-green color, commonly in orthorhombic crystals. It is a hydrous phosphate of copper..

Euchroite :: Euchroite (n.) A mineral occurring in transparent emerald green crystals. It is hydrous arseniate of copper.

Semilor :: Semilor (n.) A yellowish alloy of copper and zinc. See Simplor.

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