Definition of "electret" [electret]

• A solid dielectric that exhibits persistent dielectric polarization. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "From memory (I may be wrong) – they even supply the electret microphone."
• "System includes: WR-PRO receiver, WM-PRO belt-pack transmitter, lavaliere electret condenser microphone and hand-held electret condenser microphone."
• "The tip of the mini jack is used for the DC bias voltage for the electret microphone capsule."