transitive verb de·perm \(ˈ)dē¦pərm\

Definition of deperm


  1. :  to demagnetize partly (a ship's steel hull) as a precaution against magnetic mines by surrounding in dry dock with a large coil through which is sent an alternating current very strong at first but gradually diminishing in intensity — compare degauss

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Origin and Etymology of deperm

de- + permanent magnetism

Seen and Heard

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to cast off or become cast off

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