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insulator

[in-suh-ley-ter, ins-yuh-] /ˈɪn səˌleɪ tər, ˈɪns yə-/
noun
1.
Electricity.
  1. a material of such low conductivity that the flow of current through it is negligible.
  2. insulating material, often glass or porcelain, in a unit form designed so as to support a charged conductor and electrically isolate it.
2.
a person or thing that insulates.
Origin
1795-1805
1795-1805; insulate + -or2
Related forms
noninsulator, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for noninsulator

insulator

/ˈɪnsjʊˌleɪtə/
noun
1.
any material or device that insulates, esp a material with a very low electrical conductivity or thermal conductivity or something made of such a material
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
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Word Origin and History for noninsulator

insulator

n.

1801, agent noun in Latin form from insulate.

Online Etymology Dictionary, © 2010 Douglas Harper
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noninsulator in Science
insulator
  (ĭn'sə-lā'tər)   
A material or an object that does not easily allow heat, electricity, light, or sound to pass through it. Air, cloth and rubber are good electrical insulators; feathers and wool make good thermal insulators. Compare conductor.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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noninsulator in Culture

insulator definition


A material that does not easily transmit energy, such as electric current or heat. Materials such as wood, plastic, and ceramics are insulators. Fiberglass is an example of a heat insulator. (Compare conductor.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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