insulator
noun
in·su·la·tor
ˈin(t)-sə-ˌlā-tər 
: one that insulates: such as
a
: a material that is a poor conductor (as of electricity or heat) compare semiconductor
b
: a device made of an electrical insulating material and used for separating or supporting conductors
Examples of insulator in a Sentence
Metal is not a good insulator.
Recent Examples on the Web
The Cornell group, however, started with an insulator and added nothing.
—
Charlie Wood, Quanta Magazine, 6 Dec. 2024
Outside of its luxurious-to-the-touch texture, suede is a fantastic insulator, trapping heat inside whenever there are frigid temperatures outside.
—Amelia McBride, Travel + Leisure, 3 Nov. 2024
Firstly, the cache could act as an insulator and prevent the CCD from being cooled as effectively as a standard CPU.
—Antony Leather, Forbes, 27 Oct. 2024
Kent Nishimura / Los Angeles Times via Getty Images
The 73-acre plot is bordered by a dense green forest, which serves as an effective insulator from the hustle and bustle of nearby Massachusetts Avenue.
—Mary Cunningham, CBS News, 1 Oct. 2024
See all Example Sentences for insulator 
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Charlie Wood, Quanta Magazine, 6 Dec. 2024
Outside of its luxurious-to-the-touch texture, suede is a fantastic insulator, trapping heat inside whenever there are frigid temperatures outside.
—Amelia McBride, Travel + Leisure, 3 Nov. 2024
Firstly, the cache could act as an insulator and prevent the CCD from being cooled as effectively as a standard CPU.
—Antony Leather, Forbes, 27 Oct. 2024
Kent Nishimura / Los Angeles Times via Getty Images
The 73-acre plot is bordered by a dense green forest, which serves as an effective insulator from the hustle and bustle of nearby Massachusetts Avenue.
—Mary Cunningham, CBS News, 1 Oct. 2024
See all Example Sentences for insulator
Dictionary Entries Near insulator
Cite this Entry
“Insulator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulator. Accessed 21 Dec. 2024.
Copy CitationKids Definition
insulator
noun
in·su·la·tor
ˈin(t)-sə-ˌlāt-ər
: one that insulates
especially
: a material that is a poor conductor of heat or electricity or a device made of such material
Medical Definition
insulator
noun
in·su·la·tor
ˈin(t)-sə-ˌlāt-ər
: a material that is used to provide insulation
also
: a device made of such material
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