electret

[ 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

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

British Dictionary definitions for electret

electret
/ (ɪˈlɛktrət) /

noun

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