insulation

noun

in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən How to pronounce insulation (audio)
1
: material used in insulating
2
a
: the state of being insulated
b
: the action of insulating

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Several environmentally beneficial inventions, including solar panels, satellite detection of wildfires and energy efficient insulation, are the result of innovations related to space travel. Sheetal Khedkar Rao, Chicago Tribune, 23 May 2025 The Tensor series uses a double layer of reflective film insulation, with a baffled air chamber design, which helps keep it quiet. Scott Gilbertson, Wired News, 22 May 2025 Moreover, Scarpa says a fundamental requirement for all buildings is proper insulation — not just in the roof and walls, but also under the floors. Khanh T.l. Tran, USA Today, 20 May 2025 It's also insulated with closed cell foam insulation, to try and mitigate the poor thermal performance of living in what's essentially a big metal box. Adam Williams may 08, New Atlas, 8 May 2025 See All Example Sentences for insulation

Word History

First Known Use

1798, in the meaning defined at sense 2b

Time Traveler
The first known use of insulation was in 1798

Cite this Entry

“Insulation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulation. Accessed 28 May. 2025.

Kids Definition

insulation

noun
in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən How to pronounce insulation (audio)
1
: the act of insulating : the state of being insulated
2
: material used in insulating

Medical Definition

insulation

noun
in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən How to pronounce insulation (audio)
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
insulate transitive verb
insulated; insulating

More from Merriam-Webster on insulation

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