permalloy

(pʉrm′al′o̵i, pʉr′mə lo̵i′)

☆

noun

any of a series of alloys of iron and nickel with high magnetic permeability: used in magnetic cores, for wrapping underwater cables, etc.

Origin: perm(eability) + alloy

See permalloy in American Heritage Dictionary 4

A trademark used for any of several alloys of nickel and iron having high magnetic permeability.

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