Insulator Definition

ĭnsə-lātər, ĭnsyə-
insulators
noun
insulators
A material that insulates, especially a nonconductor of sound, heat, or electricity.
American Heritage
Anything that insulates.
Webster's New World
A device that insulates.
American Heritage
The definition of an insulator is something that is used to keep heat or sound contained, or something that does not conduct electricity.
Soundproofing material is an example of an insulator.
A substance that doesn't conduct electricity well is an example of an insulator.
YourDictionary
Synonyms:
nonconductordielectricnontransmitternonconveyor
Antonyms:
conductor
other

In the context of telecommunications, an insulator is a material that does not conduct electricity, i.e., a dielectric. See also conductor and dielectric.

Webster's New World Telecom
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Other Word Forms of Insulator

Noun

Singular:
insulator
Plural:
insulators

Origin of Insulator

  • From insulate 'to isolate' (itself from Latin insula 'island') + suffix -or

    From Wiktionary

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insulator