DIELECTRIC
insulator, dielectric, nonconductor
(noun) a material such as glass or porcelain with negligible electrical or thermal conductivity
Source: WordNet® 3.1
Etymology
Noun
dielectric (plural dielectrics)
(metamaterial) An electrically insulating or nonconducting material considered for its electric susceptibility, i.e. its property of polarization when exposed to an external electric field.
Synonyms
• insulator
Adjective
dielectric (comparative more dielectric, superlative most dielectric)
(electrically) insulating
Source: Wiktionary
Di`e*lec"tric, n. Etym: [Pref. dia- + electric.] (Elec.)
Definition: 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 Unabridged Dictionary 1913 Edition