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
Plaster work in the sanctuary and stairwells is largely complete and new insulation installed.
—
Mike Danahey, Chicago Tribune, 3 Apr. 2026
Each comes with trade-offs in durability, insulation, light transmission and cost.
—Lauren Jarvis-Gibson, Kansas City Star, 1 Apr. 2026
Polycarbonate panels are durable and provide good insulation.
—Lauren Jarvis-Gibson, Fort Worth Star-Telegram, 1 Apr. 2026
Instead, glass is melted down into lower-value products like bottles or insulation, or even used as filler in construction.
—Georgina Jedikovska, Interesting Engineering, 1 Apr. 2026
See All Example Sentences for insulation
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Mike Danahey, Chicago Tribune, 3 Apr. 2026
Each comes with trade-offs in durability, insulation, light transmission and cost.
—Lauren Jarvis-Gibson, Kansas City Star, 1 Apr. 2026
Polycarbonate panels are durable and provide good insulation.
—Lauren Jarvis-Gibson, Fort Worth Star-Telegram, 1 Apr. 2026
Instead, glass is melted down into lower-value products like bottles or insulation, or even used as filler in construction.
—Georgina Jedikovska, Interesting Engineering, 1 Apr. 2026
See All Example Sentences for insulation
Cite this Entry
“Insulation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulation. Accessed 5 Apr. 2026.
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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