insulator

[ in-suh-ley-ter, ins-yuh- ]

/ ˈɪn səˌleɪ tər, ˈɪns yə- /

noun

Electricity.

a material of such low conductivity that the flow of current through it is negligible.
insulating material, often glass or porcelain, in a unit form designed so as to support a charged conductor and electrically isolate it.

a person or thing that insulates.

Origin of insulator

First recorded in 1795–1805; insulate + -or²

OTHER WORDS FROM insulator

non·in·su·la·tor, noun

Words nearby insulator

insularize, insulate, insulating tape, insulation, insulative, insulator, insulin, insulin-antagonizing factor, insulin-coma therapy, insulin-dependent diabetes mellitus, insulinemia

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for insulator

The top of each casting is smaller in diameter than the hole in the insulator, and is grooved so as to hold the cement.
Electric Transmission of Water Power|Alton D. Adams
No matter how perfectly it might be insulated, the atmosphere itself would not be an insulator, with power such as this.
Empire|Clifford Donald Simak
Moisture will allow some current to pass over the surface of any substance no matter how good an insulator it may otherwise be.
Motion Picture Operation, Stage Electrics and Illusions|Henry C. Horstmann
To reach the cross-arm, the electric current passes down over the wet or dirty outside surface of the insulator to its lower edge.
Electric Transmission of Water Power|Alton D. Adams

In electrical engineering, paper as an insulator is almost indispensable.
From Paper-mill to Pressroom|William Bond Wheelwright

British Dictionary definitions for insulator

insulator

/ (ˈɪnsjʊˌleɪtə) /

noun

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

Cultural definitions for insulator

insulator

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

Scientific definitions for insulator

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.

单词	insulator
释义	insulator [ in-suh-ley-ter, ins-yuh- ] / ˈɪn səˌleɪ tər, ˈɪns yə- / noun Electricity. a material of such low conductivity that the flow of current through it is negligible. insulating material, often glass or porcelain, in a unit form designed so as to support a charged conductor and electrically isolate it. a person or thing that insulates. Origin of insulator First recorded in 1795–1805; insulate + -or² OTHER WORDS FROM insulator non·in·su·la·tor, noun Words nearby insulator insularize, insulate, insulating tape, insulation, insulative, insulator, insulin, insulin-antagonizing factor, insulin-coma therapy, insulin-dependent diabetes mellitus, insulinemia Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for insulator The top of each casting is smaller in diameter than the hole in the insulator, and is grooved so as to hold the cement. Electric Transmission of Water Power\|Alton D. Adams No matter how perfectly it might be insulated, the atmosphere itself would not be an insulator, with power such as this. Empire\|Clifford Donald Simak Moisture will allow some current to pass over the surface of any substance no matter how good an insulator it may otherwise be. Motion Picture Operation, Stage Electrics and Illusions\|Henry C. Horstmann To reach the cross-arm, the electric current passes down over the wet or dirty outside surface of the insulator to its lower edge. Electric Transmission of Water Power\|Alton D. Adams In electrical engineering, paper as an insulator is almost indispensable. From Paper-mill to Pressroom\|William Bond Wheelwright British Dictionary definitions for insulator insulator / (ˈɪnsjʊˌleɪtə) / noun 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 Cultural definitions for insulator insulator A material that does not easily transmit energy, such as electric current (see also current) or heat. Materials such as wood, plastic, and ceramics are insulators. Fiberglass is an example of a heat insulator. (Compare conductor.) The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for insulator 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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