Definify.com
Webster 1913 Edition
Dielectric
Diˊe-lec′tric
,Noun.
[Pref.
dia-
+ electric
.] (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.