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

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

From The Verge

The electret microphone, which is used by millions of people daily, “raises a challenge” for the inventor.

From Washington Post

When he and Sessler created the electret microphone, it was assumed that the partners would quit their jobs and create a business mass-producing the microphones for companies around the world, but West wasn’t interested.

From Washington Post

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