insulation

noun

in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən How to pronounce insulation (audio)
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 The railroad said it was obliged under law to ship the vermiculite, which was used in insulation and for other commercial purposes, and that W.R. Grace employees had concealed the health hazards from the railroad. Amy Beth Hanson, Fortune, 23 Apr. 2024 Earthships use trash as insulation to keep them comfortable inside. Ginger Zee, ABC News, 22 Apr. 2024 The SouthPark blaze was apparently sparked when spray foam insulation caught fire on the ground floor, fire officials said. Ames Alexander, Charlotte Observer, 16 Apr. 2024 This bottle features a cupholder-friendly design and double-wall insulation to keep your drinks hot or cold for up to eight hours. Alyssa Brascia, Peoplemag, 11 Apr. 2024 The results confirm there is indeed lead at the bottom of the tumbler, which contains a pellet to seal the cup's vacuum insulation layer A CT scan of Stanley’s viral Quencher cup has confirmed what the company has been saying all along: There’s only lead at the bottom of the cup. Jody Serrano / Gizmodo, Quartz, 18 Mar. 2024 The roofing was replaced with an insulating foam that helps keep the interior cool during hotter temperatures; insulation was added; and a custom stain was mixed so that the new replacement pieces match the Philippine mahogany paneling that is throughout the house. Mark David, Robb Report, 8 Mar. 2024 However, a thinner mattress won’t provide as much support or insulation as a thicker one. Paige Bennett, Better Homes & Gardens, 12 Apr. 2024 Plastic foam, which is often referred to as the brand name Styrofoam, is a particularly problematic kind of plastic that is common in food packaging, construction and insulation. Caitlin Looby, Journal Sentinel, 11 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'insulation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1798, in the meaning defined at sense 2b

Time Traveler
The first known use of insulation was in 1798

Dictionary Entries Near insulation

Cite this Entry

“Insulation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insulation. Accessed 28 Apr. 2024.

Kids Definition

insulation

noun
in·​su·​la·​tion ˌin(t)-sə-ˈlā-shən How to pronounce insulation (audio)
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 How to pronounce insulation (audio)
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
insulate transitive verb
insulated; insulating

More from Merriam-Webster on insulation

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!