insulation

noun
in·​su·​la·​tion | \ ˌin(t)-sə-ˈlā-shən \

Definition of insulation

1a : the action of insulating
b : the state of being insulated
2 : material used in insulating

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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

If the insulation in your attic doesn't reach the top of the floor joists, there's not enough to trap heat. The Good Housekeeping Institute, Good Housekeeping, "How to Draft-Proof Your Home for a Lower Heating Bill," 20 Nov. 2018 Even in the case of high-efficiency windows and adding insulation, these changes can force the system to work differently. Brian Sodoma, azcentral, "The ‘8-800-22’ rule … and a couple other signs it’s time to replace your air conditioner," 11 May 2018 As the years went by and the business changed hands, newer and better insulation was added. Sean Flynn, Esquire, "The Perfect Fire," 9 Mar. 2017 Moser applied 6 inches of fiberglass insulation on the inside of the new roof, leaving a 2-inch-high airspace between new and old roof. Joanna Bober, ELLE Decor, "Country Fresh," 5 July 2012 But the underground chambers’ insulation was put to good use at least one more time during the particularly cold winter of 1911-12. Jennifer Nalewicki, Smithsonian, "Beneath Indianapolis’ Bustling City Market Lies a Forgotten Underground Expanse," 9 May 2018 Over time, the insulation started to come off his wires; disagreements with cabinet departments started to undermine his position. James Stavridis, Time, "H.R. McMaster Worked for Me. His Retirement From the Military Reveals A Lot About President Trump," 23 Mar. 2018 Typically inspectors will check the foundation and basement, interior plumbing and electrical systems, heating and cooling systems, windows, doors, floors, walls, ceilings, attic, and visible roofing/insulation, Freshome shares. Taylor Mead, House Beautiful, "Everything You Should Know About Home Inspections," 10 Oct. 2018 If a wall or roof has no insulation, adding some makes a huge difference. Henry Gifford, Popular Mechanics, "Your House Is Bleeding You Dry. Here Are 9 Steps To Save You Money.," 8 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'insulation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of insulation

1798, in the meaning defined at sense 1a

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Last Updated

12 Feb 2019

Look-up Popularity

Time Traveler for insulation

The first known use of insulation was in 1798

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More Definitions for insulation

insulation

noun

English Language Learners Definition of insulation

: a material or substance that is used to stop heat, electricity, or sound from going into or out of something : a material that insulates something
: the quality or state of being insulated
: the act of insulating something

insulation

noun
in·​su·​la·​tion | \ ˌin-sə-ˈlā-shən \

Kids Definition of insulation

1 : material that is used to stop the passage of electricity, heat, or sound from one conductor to another
2 : the act of insulating : the state of being insulated insulation of wires

insulation

noun
in·​su·​la·​tion | \ ˌin(t)-sə-ˈlā-shən \

Medical Definition of insulation

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

Other Words from insulation

insulate \ ˈin(t)-​sə-​ˌlāt \ transitive verb insulated; insulating

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