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.
It’s created to resemble the soft, fluffy texture of sheep fleece, with the length of the pile varying depending on the amount of softness and insulation required. Jessica MacDonald, Travel + Leisure, 6 Mar. 2025 The rebates aim to reduce the cost of home upgrades like installing insulation and heat pumps or buying efficient appliances like electric stoves — with an eye to also reducing consumers’ energy bills and cutting planet-warming carbon emissions. Greg Iacurci, CNBC, 5 Mar. 2025 But State Farm had not yet approved the estimate, which ranged from $80,000 to $100,000 to pull insulation from the walls, remove harmful particles from all surfaces and replace furniture, clothing and appliances exposed to excessive smoke and ash. Alicia Victoria Lozano, NBC News, 4 Mar. 2025 Leaves: Birds like Eastern towhees and wood thrushes use leaves in their nests for camouflage, insulation, and structure. Anne Readel, Better Homes & Gardens, 3 Mar. 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 21 Mar. 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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