noun Electricity.

a dielectric that possesses a permanent or semipermanent electric polarity, analogous to a permanent magnet.

Origin of electret

First recorded in 1880–85; electr(icity) + (magn)et
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British Dictionary definitions for electret



a permanently polarized dielectric material; its electric field is similar to the magnetic field of a permanent magnet

Word Origin for electret

C20: from electr (icity + magn) et
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