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[plat-n-i-rid-ee-uh m, -ahy-rid-] /ˌplæt n ɪˈrɪd i əm, -aɪˈrɪd-/

a natural alloy composed chiefly of and .
any alloy of platinum and iridium: used in jewellery, electrical contacts, and hypodermic needles


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  • Platinite

    [plat-n-ahyt] /ˈplæt nˌaɪt/ Trademark. 1. a brand name for an alloy of about 55 percent iron and 45 percent nickel, having the same coefficient of expansion as platinum and used as a substitute for platinum in electrical work.

  • Platinize

    [plat-n-ahyz] /ˈplæt nˌaɪz/ verb (used with object), platinized, platinizing. 1. to coat or plate with metallic . /ˈplætɪˌnaɪz/ verb 1. (transitive) to coat with platinum

  • Platino-

    1. a combining form representing in compound words: platinocyanic. combining form 1. of, relating to, containing, or resembling platinum: platinotype

  • Platinocyanic

    [plat-n-oh-sahy-an-ik] /ˌplæt n oʊ saɪˈæn ɪk/ adjective, Chemistry. 1. of or derived from platinocyanic acid.

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