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.
For example, expanded programs to help households cut down on energy waste by installing more energy-efficient appliances and insulating their homes would be transformational. Claire Hao, Houston Chronicle, 7 Jan. 2026 Not only are these chemicals harmful if ingested, but glycerin may also cause feathers to become matted, which reduces their ability to insulate birds against cold temperatures. Rita Pelczar, Better Homes & Gardens, 7 Jan. 2026 Nuts and fatty fishes, like salmon and sardines, contain omega-3 fatty acids, which are important for building the insulating sheaths that surround the nerve fibers that carry information from one brain cell to another. Dana G. Smith, New York Times, 6 Jan. 2026 We here in Florida may be insulated because of Governor Ron DeSantis’ relationship with Israel and the local Jewish community. Rabbi Steve Roth, Sun Sentinel, 6 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

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Cite this Entry

“Insulate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulate. Accessed 9 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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