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cuprous |
of or composed of monovalent copper. |
doit |
a former copper coin of the Netherlands and Dutch colonies that came into use in the seventeenth century. [1/2 definitions] |
drypoint |
an engraving technique, used esp. on copper, in which furrows are incised with a hard steel needle so as to leave a burr at the sides for a softer outline. [1/2 definitions] |
Dumet wire |
a particular type of wire, made of a combination of iron and nickel encased in a copper sleeve, used to create vacuum seals between glass and metal in items such as incandescent light bulbs. |
Dutch metal |
an alloy of copper and zinc, thin sheets of which resemble gold leaf. |
fool's gold |
iron or copper pyrite, sometimes mistaken for gold because of its color. |
German silver |
any of several alloys of copper, zinc, and nickel used for utensils, drawing instruments, and the like; nickel silver. |
gunmetal |
either of two copper-tin alloys, one of which was formerly used in making cannons. [1/3 definitions] |
hemocyanin |
a bluish blood pigment that bears oxygen and contains copper, found in certain invertebrates. |
lode |
a deposit of a mineral, such as copper ore, that fills a crack in a rock formation. [1/3 definitions] |
malachite |
a copper ore, usu. bright bluish green, used mostly for jewelry and ornamental work. |
metal |
any of several solid mineral elements, such as silver, iron, aluminum, or copper, that can conduct heat and electricity, are malleable under heat or pressure, and typically form salts when combined with nonmetals. [1/2 definitions] |
mezzotint |
a method of engraving on roughened copper or steel by scraping and polishing areas to produce effects of light and shade. [1/3 definitions] |
nickel silver |
a silver-colored, hard, durable, corrosion-resistant alloy of copper, zinc, and nickel, used for utensils, tableware, and the like. |
ormolu |
an alloy of copper and zinc or tin that resembles gold, or a similar gilded metal, used to decorate furniture, architectural features, or jewelry. |
patina |
a greenish, brownish, or reddish crust or film produced by oxidation on the surface of old metals such as bronze and copper. [1/4 definitions] |
pinchbeck |
an alloy of zinc and copper, used in cheap jewelry as a substitute for gold. [1/3 definitions] |
platinoid |
an alloy made of copper, nickel, and zinc to which a small amount of tungsten or aluminum has been added, used esp. in electric coils. [1/3 definitions] |
ring-necked duck |
a dark North American duck, the male of which has a faint, copper-colored ring around the neck. |
rotogravure |
a printing process in which images or letters etched on a copper cylinder are transferred to paper or a similar surface in a rotary press. [1/2 definitions] |
sheeting |
material such as copper that is used to cover or line a surface. [1/3 definitions] |
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