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
Heavier synthetic insulation keeps your torso toasty, while lighter insulation in the sleeves and hood adds more dexterity and mobility.
—
Drew Zieff, Outside Online, 11 June 2025
Water gets into sheathing and insulation, which triples the cost of repair within six months.
—Jamie Gold, Forbes.com, 10 June 2025
Others are experimenting with new polymer aerogel materials based on penguin feathers that could have applications for building insulation and climate control, showing the wide variety of applications that can be based on one particularly specialized group of birds.
—Ian Rose, Smithsonian Magazine, 10 June 2025
The other parts of the internals include poron foam and other insulation that impact the keyboard’s sound.
—Gieson Cacho, Mercury News, 31 May 2025
See All Example Sentences for insulation
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Drew Zieff, Outside Online, 11 June 2025
Water gets into sheathing and insulation, which triples the cost of repair within six months.
—Jamie Gold, Forbes.com, 10 June 2025
Others are experimenting with new polymer aerogel materials based on penguin feathers that could have applications for building insulation and climate control, showing the wide variety of applications that can be based on one particularly specialized group of birds.
—Ian Rose, Smithsonian Magazine, 10 June 2025
The other parts of the internals include poron foam and other insulation that impact the keyboard’s sound.
—Gieson Cacho, Mercury News, 31 May 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 30 Jun. 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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