Electret
[ih-lek-trit] /ɪˈlɛk trɪt/
noun, Electricity.
1.
a dielectric that possesses a permanent or semipermanent electric polarity, analogous to a .
/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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