1. dielectric - Noun
2. dielectric - Adjective
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.
Source: Webster's dictionaryElementary considerations led me to the conclusion that a medium, composed of layers of different dielectric constants, must behave as a uniaxial crystal if it is assumed that the layer thicknesses are only a fraction of a wave-length. Karl Ferdinand Braun
A coaxial cable has a conductive wire inside a conductive tube, separated by a dielectric layer. Source: Internet
A dielectric mirror used in lasers For scientific optical work, dielectric mirrors are often used. Source: Internet
A dielectric medium showing orientation of charged particles creating polarization effects. Source: Internet
A complete analysis requires accounting for both binary Coulomb collisions as well as collective (dielectric) behavior. Source: Internet
A dielectric (orange) reduces the field and increases the capacitance. Source: Internet