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superalloy

American

[soo-per-al-oi] / ˈsu pərˌæl ɔɪ /

noun

an alloy, often with a nickel, nickel-iron, or cobalt base, capable of withstanding very high temperatures, used in jet engines, rockets, etc.

First recorded in 1945–50; super- + alloy

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023