dielectric Meaning, Definition & Usage
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noun a material such as glass or porcelain with negligible electrical or thermal conductivity
nonconductor; insulator.
WordNet
Di`e*lec"tric noun
Etymology
Pref.Definitions
(Elec.) Any substance or medium that transmits the electric force by a process different from conduction, as in the phenomena of induction; a nonconductor. separating a body electrified by induction, from the electrifying body.