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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.
Uno Lamp Shades. Are you wondering what UNO actually is? Well, UNO refert to the type of fitter, i.e. the way the shade connects to your lamp. All fitters are integrated in the lampshade so it is vital that you determine the type of fitter that you need for your fixture before you purchase your shade.