dielectric

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

• (UK, US) IPA^(key): /ˌdaɪ.ɪˈlɛk.tɹɪk /, /ˌdaɪ.əˈlɛk.tɹɪk/

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dielectric (plural dielectrics)

1. (physics) An electrically insulating or nonconducting material considered for its electric susceptibility, i.e. its property of polarization when exposed to an external electric field.

• insulator

• dielectric constant
• dielectricity

dielectric (comparative more dielectric, superlative most dielectric)

1. (electrically) insulating