electret

American  

[ih-lek-trit] / ɪˈlɛk trɪt /

noun

Electricity.

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

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electret British  

/ ɪˈlɛktrət /

noun

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

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Etymology

Origin of electret

First recorded in 1880–85; electr(icity) + (magn)et

Example Sentences

FEP is an electret, a type of material that's electrically charged and produces an external electrostatic field, similar to the way a magnet produces a magnetic field.

From Science Daily • May 22, 2024

Logitech is promising that the Icepop will deliver enhanced “broadcast-quality” performance with its 10mm electret condenser mic.

From The Verge • Aug. 10, 2021

For example, James E. West, 84, obtained 11 patents when he was over 60 and is an inventor of the electret microphone.

From New York Times • Apr. 17, 2015

This ribbon type microphone had a very large and heavy permanent magnet embodied in the design and must have weighed about 1,000 times more than a modern electret lapel microphone.

From The Dawn of Amateur Radio in the U.K. and Greece: a personal view by Joly, Norman F.