How to Use insulator in a Sentence

insulator

noun
  • Metal is not a good insulator.
  • The air also makes snow a great insulator.
    — Mariyam Muhammad, Cincinnati Enquirer, 23 Jan. 2026
  • Down is, ounce-for-ounce, the most effective insulator in the world.
    — Déjà Leonard, Popular Mechanics, 17 Jan. 2023
  • With its low density, air is an ideal insulator, which is why puffy coats work so well.
    — Ac Shilton, Outside Online, 29 Nov. 2020
  • Thin layers can help trap warm air and act as insulators beneath a snowsuit.
    — Katrina Cossey, Parents, 12 Feb. 2024
  • For an insulator, these electrons are stuck with their original atoms and can not move around.
    — WIRED, 27 Oct. 2023
  • There’s no arguing that wool is a better insulator from the cold.
    — Joe Jackson, Outside Online, 9 Jan. 2025
  • For very cold weather, an insulator, like a thin down jacket, is useful.
    — New York Times, 19 Jan. 2021
  • Wool is an excellent insulator and will harness the power of your body heat to warm you up.
    — Maryal Miller Carter, USA TODAY, 1 Feb. 2024
  • Crouch down on your feet and put an insulator between you and the ground (like a foam sleeping pad or even a backpack).
    — David Caraccio, sacbee, 4 June 2019
  • The king of coolers is back with a flyweight (3-pound) contender for best leakproof insulator.
    — Dakota Kim, Los Angeles Times, 2 Nov. 2022
  • Amazon This is a taller version of our favorite insulator for cold ones.
    — Nena Farrell, WIRED, 12 July 2023
  • Buy a window insulator kit with clear window film for reducing air leaks.
    — Brandee Gruener, Southern Living, 7 Feb. 2026
  • The process happens because quartz is an insulator, and gold is a conductor.
    — Elizabeth Gamillo, Smithsonian Magazine, 9 Sep. 2024
  • That’s not the case for an insulator, a material like wood, plastic, or glass.
    — WIRED, 27 Oct. 2023
  • This insulator will keep the batch fresh for up to an hour after cooking—giving you plenty of time to enjoy your meal.
    — Gabriela Izquierdo, Southern Living, 2 Dec. 2023
  • Snow acts as an insulator, keeping the temperature of the ground under the snow warmer than the air.
    — Dan Nosowitz, Better Homes & Gardens, 20 May 2020
  • Glass is already a great insulator, so will the extra layer of air make a difference?
    — Charlie Sorrel, WIRED, 23 Jan. 2009
  • The metal-insulator model was a proof of concept.
    — IEEE Spectrum, 4 Feb. 2026
  • Snow is an excellent insulator, so use it to keep your cooking water from freezing overnight.
    — Joe Jackson, Outside Online, 28 Feb. 2020
  • The insulator on one chip affixes to the other when they are pressed together.
    — IEEE Spectrum, 21 Feb. 2024
  • Soil acts as an insulator from temperature and holds moisture to protect the roots.
    — Erica Browne Grivas, Better Homes & Gardens, 6 May 2026
  • The 4-millimeter thick sleeve acts as a thermal insulator to keep drinks cold for longer and prevent ice from melting.
    — Maggie Horton, Peoplemag, 2 Aug. 2024
  • Rayhan explained that the power line has an insulator hanging from it, which has a fiberglass rod inside.
    — Washington Post, 31 Oct. 2020
  • The hammocks were attached to walls with Velcro and came with an insulator for the bottom and blanket for the top.
    — Roger Simmons, The Seattle Times, 12 Apr. 2019
  • Snowfall acts as an insulator, trapping heat on the ground allowing many types of ticks to keep isolated against the cold.
    — Stephen Underwood, Hartford Courant, 6 Feb. 2026
  • Placing it on a soft surface, like on a pillow, bed, couch, your lap or anything that will act as an insulator is a really bad idea.
    — Ken Colburn, azcentral, 24 June 2019
  • It’s made from durable Canadian hemlock wood that not only looks good but functions as an insulator.
    — Clara McMahon, People.com, 20 Jan. 2025
  • The duff, with its compact but airy layering, is a superb insulator of frozen ground underneath.
    — Randi Jandt, Scientific American, 1 Oct. 2021
  • The key seems to be that quartz is an insulator, while gold is famously a great conductor of electricity.
    — Michael Irving, New Atlas, 2 Sep. 2024

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

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