Dictionary.com
Thesaurus.com
Synonyms

nonconductor

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

noun

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

nonconductor British  
/ ˌnɒnkənˈdʌktə /

noun

  1. 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

Etymology

Origin of nonconductor

First recorded in 1745–55; non- + conductor

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.