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Freebase(5.00 / 1 vote)Rate this definition: Electret. Electret is a dielectric material that has a quasi-permanent electric charge or dipole polarisation. An electret generates internal and external electric fields, and is the electrostatic equivalent of a permanent magnet. Oliver Heaviside coined this term in 1885.
Jarret [jar-ret] as a name for boys is an Old German name, and the meaning of the name Jarret is apear-brave. Jarret is a version of Garret (Irish, Gaelic): surname derived from Gerald and Gerard. Jarret is also a derivative of Jarrett (Old German): variant and surname version of Garrett. Associated with: brave.