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[ih-lek-trit] /ɪˈlɛk trɪt/
noun, Electricity
a dielectric that possesses a permanent or semipermanent electric polarity, analogous to a permanent magnet.
Origin of electret
1880-85; electr(icity) + (magn)et Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for electret
  • electret filters use electrically charged media to attract particles.
  • In contrast to the electrostatically enhanced filter, electret media are permanently charged in the course of manufacturing.
  • There are two types of condenser microphones: conventional and electret.
  • The electret microphone revolutionized the microphone industry, with almost one billion manufactured each year.
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
C20: from electr(icity + magn)et
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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