nonconductor

American

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

noun

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

nonconductor British

/ ˌnɒnkənˈdʌktə /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

nonconducting

adjective

Etymology

Origin of nonconductor

First recorded in 1745–55; non- + conductor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Mica, which laymen know as isinglass, is mainly used in peacetime as a nonconductor for electrical equipment.

From Time Magazine Archive

Through this spark-charged atmosphere, Lem Lemnitzer moved like a nonconductor.

From Time Magazine Archive

Where all the films are removed, the remaining glass is a nonconductor.

From Time Magazine Archive

With an interposed nonconductor none of the chemical power becomes transferable.

From Experimental Researches in Electricity, Volume 1 by Faraday, Michael

Evidently they put small faith in the "three thousand miles of cool sea-water" as a nonconductor of warfare!

From The World Decision by Herrick, Robert

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023