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.
But its relative insulation means that, rather than scrambling to find new sources for products, the CEO can focus on building out other revenue streams—moving into entertainment programming and expanding the Crayola Experience theme parks across the U.S. and globally. Brit Morse, Fortune, 6 July 2025 Because horned lizards dig for hibernation, nesting and insulation purposes, they commonly are found in loose sand or loamy soils. Marley Malenfant, Austin American Statesman, 2 July 2025 Stacie Cranmer, who built decks and installed insulation for Houck, was the first of those two witnesses. Killian Baarlaer, The Courier-Journal, 2 July 2025 Accepted debris includes drywall and insulation, carpeting and rugs, furniture, tree limbs and yard debris and bagged household waste. Bebe Hodges, The Enquirer, 2 July 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 19 Jul. 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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