Electret meaning

ĭ-lĕktrĭt
A solid dielectric that exhibits persistent dielectric polarization.
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Any of certain solid, dielectric materials that have a permanent electric charge after being melted and resolidified in a strong electric field: used in telephones, microphones, etc.
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(physics) A solid dielectric having a quasi-permanent charge; usually a metallized film; used in electroacoustic and electromechanical transducers and in air filters.
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Origin of electret

  • electr(icity) (magn)et

    From American Heritage Dictionary of the English Language, 5th Edition

  • Blend of electricity and magnet.

    From Wiktionary