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
Yeti also doesn’t recommend them for storing warm leftovers in the fridge, as the vacuum insulation will prevent contents from properly cooling down and actually result in rapid food spoilage.
—
Melanie Fincher, Southern Living, 18 Apr. 2025
Mold and mildew in old insulation can also cause additional problems for your home.
—Kristine Gill, Better Homes & Gardens, 16 Apr. 2025
Kennedy, 38, had fiberglass insulation installed in his attic and air-sealed his 3,700-square-foot home in March, a project that cost just over $6,000 after state and local rebates.
—Greg Iacurci, CNBC, 15 Apr. 2025
This Quencher has the same double-wall vacuum insulation that keeps drinks hot or cold for hours.
—Christopher Murray, FOXNews.com, 15 Apr. 2025
See All Example Sentences for insulation
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Melanie Fincher, Southern Living, 18 Apr. 2025
Mold and mildew in old insulation can also cause additional problems for your home.
—Kristine Gill, Better Homes & Gardens, 16 Apr. 2025
Kennedy, 38, had fiberglass insulation installed in his attic and air-sealed his 3,700-square-foot home in March, a project that cost just over $6,000 after state and local rebates.
—Greg Iacurci, CNBC, 15 Apr. 2025
This Quencher has the same double-wall vacuum insulation that keeps drinks hot or cold for hours.
—Christopher Murray, FOXNews.com, 15 Apr. 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 24 Apr. 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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