A substance composed of a mixture of two or more metals.
- chrome-cobalt alloys alloys of cobalt and chromium containing molybdenum and/or tungsten plus trace elements; used in dentistry for denture bases and frameworks, and other structures.
- eutectic a. an a., generally brittle and subject to tarnish and corrosion, with a fusion temperature lower than that of any of its components; used in dentistry mainly in solders.
- gold a. an a. whose principal ingredient is gold, usually contains copper or platinum and silver; used in dentistry for restorations requiring considerable strength.
- Raney a. an a. of Ni and Al in equal proportions, used in the preparation of Raney Nickel.
- silver-tin a. any a. of silver and tin; commonly 3 parts Ag and 1 part Sn, forming Ag3Sn, the chief intermetallic compound in dental amalgam.

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al·loy 'al-.ȯi, ə-'lȯi n
1) the degree of mixture with base metals
2) a substance composed of two or more metals or of a metal and a nonmetal intimately united usu. by being fused together and dissolving in each other when molten also the state of union of the components
al·loy ə-'lȯi, 'al-.ȯi vt

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al·loy (alґoi) [Fr. aloyer to mix metals] a mixture of two or more metals or of one or more metals with certain metalloids that are mutually soluble in the molten condition; distinguished as binary, ternary, quaternary, etc., depending on the number of metals in the mixture. An alloy may also be classified on the basis of its behavior when solidified.

Medical dictionary. 2011.