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permalloy

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Perm⋅al⋅loy

[purm-al-oi, pur-muh-loi]
Trademark.
a brand name for any of a class of alloys of high magnetic permeability, containing from 30 to 90 percent nickel.

Origin:
1920–25; perm(anent) + alloy
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Perm·al·loy   (pûr'mə-loi', pûrm-āl'oi')   
A trademark used for any of several alloys of nickel and iron having high magnetic permeability.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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