in·​su·​la·​tion | \ ˌin(t)-sə-ˈlā-shən How to pronounce insulation (audio) \

Definition of insulation

1a : the action of insulating
b : the state of being insulated
2 : material used in insulating

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Examples of insulation in a Sentence

These materials provide the insulation needed in cold weather. she had grown up in such rural insulation that she'd never met anyone of a different race

Recent Examples on the Web

The model had a tough exterior and enough insulation—as thick as a fist, in spots—to keep beverages icy for longer. Louis Mazzante //, Popular Mechanics, "How the Yeti Tundra Became the Coolest Cooler," 1 Sep. 2019 The outer fabric, waterproof membrane, lining and insulation that are all made from recycled materials (zippers, pull-tabs and labels are the only components that are not recycled). Los Angeles Times, "A plant-based running shoe? Outdoor gear that’s kind to the planet," 8 Aug. 2019 Engineers also took great pains to make the new car quiet on the highway, with heat shields and ample insulation to cut engine noise. Washington Post, "Corvette goes mid-engine for first time to raise performance," 19 July 2019 Entekra, based in Ripon, California, uses a similar computerized factory to stitch together a house frame but doesn’t add the plumbing, wiring and insulation. Paul Davidson, USA TODAY, "With construction workers scarce, homebuilders turn to robots, software," 25 June 2018 Government programs incentivizing upgrades to home insulation, for example, have largely disappeared in recent years due to austerity measures, Chisholm said. Linda Givetash, NBC News, "European heatwave breaks record in Paris as Britain anticipates hottest temps ever," 25 July 2019 Large numbers of the animals would also trample snow cover, stopping it from acting like insulation for the ground and allowing the permafrost to feel the effects of the bitter Arctic winters. Paul Mann, Smithsonian, "Can Bringing Back Mammoths Help Stop Climate Change?," 14 May 2018 And, like it or not, fracking seems like an insulation against oil shocks, at least in the foreseeable future. Randy Essex, Detroit Free Press, "Essex: Is the auto industry setting itself up for another big truck bust?," 27 Jan. 2018 This light softshell has a fleece insulation lining and a durable water-repellent (DWR) finish. Adrienne So, WIRED, "26 Great Outdoor Deals From REI's Huge Labor Day Sale," 24 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'insulation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of insulation

1798, in the meaning defined at sense 1a

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Statistics for insulation

Last Updated

8 Oct 2019

Look-up Popularity

Time Traveler for insulation

The first known use of insulation was in 1798

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More Definitions for insulation



English Language Learners Definition of insulation

: a material or substance that is used to stop heat, electricity, or sound from going into or out of something : a material that insulates something
: the quality or state of being insulated
: the act of insulating something


in·​su·​la·​tion | \ ˌin-sə-ˈlā-shən How to pronounce insulation (audio) \

Kids Definition of insulation

1 : material that is used to stop the passage of electricity, heat, or sound from one conductor to another
2 : the act of insulating : the state of being insulated insulation of wires


in·​su·​la·​tion | \ ˌin(t)-sə-ˈlā-shən How to pronounce insulation (audio) \

Medical Definition of insulation

1 : the action of separating a conductor from conducting bodies by means of nonconductors so as to prevent transfer of electricity, heat, or sound also : the state resulting from such action
2 : material used to provide insulation

Other Words from insulation

insulate \ ˈin(t)-​sə-​ˌlāt How to pronounce insulate (audio) \ transitive verb insulated; insulating

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