Definitions

1. noun

A material or object that has a permanent electric charge, typically produced by triboelectrification, and can be used to store electrical energy or as a component in electrical devices.

“The researchers used an electret to generate a consistent electric field for their experiment.”

2. noun

A type of permanent magnet made from a material that retains its magnetic field, often used in applications such as microphones and sensors.

“The electret in the microphone allowed for improved sound quality and reduced noise levels.”