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
Quality wellness retreats design accommodations for deep sleep, with blackout curtains, quality bedding and noise insulation as standard features.
—
Lauren Schuster, Kansas City Star, 6 May 2026
Sealing gaps around windows and doors, adding insulation in accessible areas, installing a smart thermostat, or replacing worn weatherstripping can make a home more comfortable and may help reduce energy use over time.
—Encyclopedia Britannica, 6 May 2026
Additionally, Xcel Energy offers rebates and incentives to install energy efficient furnaces and insulation.
—Jennifer McRae, CBS News, 6 May 2026
The brand’s products are known for excellent insulation, sturdy stainless-steel construction, and thoughtful lid designs that help prevent spills on the move.
—Jessica Chapel, Condé Nast Traveler, 6 May 2026
See All Example Sentences for insulation
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Lauren Schuster, Kansas City Star, 6 May 2026
Sealing gaps around windows and doors, adding insulation in accessible areas, installing a smart thermostat, or replacing worn weatherstripping can make a home more comfortable and may help reduce energy use over time.
—Encyclopedia Britannica, 6 May 2026
Additionally, Xcel Energy offers rebates and incentives to install energy efficient furnaces and insulation.
—Jennifer McRae, CBS News, 6 May 2026
The brand’s products are known for excellent insulation, sturdy stainless-steel construction, and thoughtful lid designs that help prevent spills on the move.
—Jessica Chapel, Condé Nast Traveler, 6 May 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 10 May. 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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