insulation
noun
in·su·la·tion
ˌin(t)-sə-ˈlā-shən 
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
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
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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
Cite this Entry
“Insulation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulation. Accessed 21 Oct. 2025.
Copy CitationKids Definition
insulation
noun
in·su·la·tion
ˌin(t)-sə-ˈlā-shən
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
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
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