Dielectric

//ˌdaɪ.ɪˈlɛk.tɹɪk// adj, noun

Definitions

Adjective
  1. 1
    insulating
Noun
  1. 1
    An electrically insulating or nonconducting material considered for its electric susceptibility, i.e. its property of polarization when exposed to an external electric field.
  2. 2
    a material such as glass or porcelain with negligible electrical or thermal conductivity wordnet

Etymology

Etymology 1

From dia- (“through”) + electric. Learned 19th-century formation, coined by William Whewell (died 1866).

Etymology 2

From dia- (“through”) + electric. Learned 19th-century formation, coined by William Whewell (died 1866).

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