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WordReference Random House Unabridged Dictionary of American English © 2024plat•i•noid (plat′n oid′),USA pronunciation adj. - Metallurgyresembling platinum:the platinoid elements.
n. - Metallurgyany of the metals, as palladium or iridium, with which platinum is commonly associated.
- Metallurgyan alloy of copper, zinc, and nickel, to which small quantities of such elements as tungsten or aluminum have been added.
- platin(um) + -oid 1860–65
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