nonconductor

American  

[non-kuhn-duhk-ter] / ˌnɒn kənˈdʌk tər /

noun

1. a substance that does not readily conduct heat, sound, or electricity.

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nonconductor British  

/ ˌnɒnkənˈdʌktə /

noun

1. a substance that is a poor conductor of heat, electricity, or sound

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Other Word Forms

• nonconducting adjective

Etymology

Origin of nonconductor

First recorded in 1745–55; non- + conductor

Example Sentences

“Dielectric material acts as a nonconductor to a direct electric current and is used to help ensure that an electro-static discharge does not accidentally set off the main charge of the weapon.”

From Time

As is well known, gases under ordinary conditions are nonconductors.

From Project Gutenberg

The hair furnishes protection against extreme and sudden variations of temperature by reason of the fact that hairs are poor conductors of heat, and inclose between them a still layer of air, itself a nonconductor.

From Project Gutenberg

Long before electricity was invented, human nature knew all about interposing nonconductors between itself and the truth.

From Project Gutenberg

It is a remarkably good nonconductor of electricity, and therefore it has been generally used to protect ocean cables, though recently rubber has been taking its place.

From Project Gutenberg