insulate

verb

in·​su·​late ˈin(t)-sə-ˌlāt How to pronounce insulate (audio)
insulated; insulating
Synonyms of insulatenext

transitive verb

: to place in a detached situation : isolate
especially : to separate from conducting bodies by means of nonconductors so as to prevent transfer of electricity, heat, or sound

Examples of insulate in a Sentence

They used a special type of fiberglass to insulate the attic. a material that is able to insulate against cold The company has tried to insulate itself from the region's political turmoil. I wish I could insulate my children from painful experiences.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Dog houses should have a safe heat source and insulating straw. Jen Reeder, Forbes.com, 23 Jan. 2026 The 40 Below’s Insulated Food Bag is a neoprene pouch that helps the cook-in bags, which are insulated with much milder climates and shorter cooking times in mind, retain heat while your chili mac rehydrates. Outside, 23 Jan. 2026 Be sure to wear two to three layers of clothing, with one insulating layer, as well as a warm, water-resistant coat or outer layer to keep out the chill from the wind. Natalie Jones, Baltimore Sun, 23 Jan. 2026 Install insulated faucet covers on exterior spigots to reduce exposure to cold air. Alexis Simmerman, Austin American Statesman, 23 Jan. 2026 See All Example Sentences for insulate

Word History

Etymology

Latin insula

First Known Use

circa 1741, in the meaning defined above

Time Traveler
The first known use of insulate was circa 1741

Browse Nearby Words

Cite this Entry

“Insulate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulate. Accessed 25 Jan. 2026.

Kids Definition

insulate

verb
in·​su·​late ˈin(t)-sə-ˌlāt How to pronounce insulate (audio)
insulated; insulating
: to place in a detached situation : isolate
especially : to separate from conducting bodies by means of nonconductors so as to prevent transfer of electricity, heat, or sound
Etymology

from Latin insula "island" — related to isle, isolate, peninsula

More from Merriam-Webster on insulate

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