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.
The linen-blend material offers just the right amount of insulation without overheating, and is 100% machine washable for breezy laundry days. Mariana Best, Better Homes & Gardens, 10 Oct. 2025 The everyday outerwear piece is lined with Heatseeker Eco insulation to actually keep you toasty without weighing you down. Melony Forcier, Travel + Leisure, 10 Oct. 2025 Local resident Lauren Roark described seeing gray smoke and burned debris scattered across her yard, resembling insulation. Amanda Castro, MSNBC Newsweek, 10 Oct. 2025 The cavernous space, about 6,000 square-feet, lacks electricity, insulation and walls, said Fred Eichenhofer, the board chair for the Meadow Vista Community Center nonprofit. Ishani Desai, Sacbee.com, 9 Oct. 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 Oct. 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

Last Updated: - Updated example sentences
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