sealant

noun
seal·​ant | \ ˈsē-lənt How to pronounce sealant (audio) \

Definition of sealant

1 : a sealing agent a radiator sealant
2 : a plastic material applied to parts of teeth with imperfections (such as pits and fissures) to prevent dental decay

Examples of sealant in a Sentence

Recent Examples on the Web Everyone should carry a can of tire sealant in their vehicle with them and know how to use it if the situation arises. The Editors, Field & Stream, "Three Things To Consider When Shopping For A Tire Repair Kit," 6 Sep. 2019 The problem is mirrored on Boeing’s civilian aircraft assembly lines, where tools, rags, titanium shavings, metal nuts, tubes of sealant, a string of lights, and even a ladder were found left behind in 737 MAX aircraft. Kyle Mizokami, Popular Mechanics, "More Bad News for Boeing's Pegasus: Trash Inside Its New Refueling Tankers," 17 June 2020 These tires stay inflated with the help of a layer in the tire casing or a liquid sealant that’s added to make the rubber impermeable to air flow. Popular Mechanics Test Team, Popular Mechanics, "The Best Bikes for Every Type of Cyclist," 17 July 2020 Between tiles in the shower, for example, Deanna applied flexible silicone sealant instead of traditional grout to prevent breakage from inevitable bumps in the road. Jessica Bennett, Better Homes & Gardens, "This Incredible Van Makeover Features Clever DIYs You Can Steal for Any Small Space," 10 July 2020 In 2017, the city started coating residential streets with a light-colored sealant intended to reflect the heat away. Erin Stone, azcentral, "'Cool pavement' experiments help urban planners find ways to ease rising temperatures," 15 May 2020 For a time many Americans were conversant in O-rings, the sealant that failed with tragic consequences when the space shuttle Challenger blew up in 1986. Los Angeles Times, "The coronavirus has changed everything — including how we talk," 11 Apr. 2020 Some people like to use silicon spray sealants that are equally effective and somewhat easier to use. Popular Science, "The best, proven way to make your leather boots last," 10 Mar. 2020 Some people like to use silicon spray sealants that are equally effective and somewhat easier to use. Popular Science, "The best, proven way to make your leather boots last," 10 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sealant.' 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 sealant

1944, in the meaning defined at sense 1

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Time Traveler for sealant

Time Traveler

The first known use of sealant was in 1944

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Statistics for sealant

Last Updated

18 Sep 2020

Cite this Entry

“Sealant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sealant. Accessed 22 Sep. 2020.

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More Definitions for sealant

sealant

noun
How to pronounce sealant (audio)

English Language Learners Definition of sealant

: a substance that is put on a surface in order to protect it from air, water, etc.

sealant

noun
seal·​ant | \ ˈsē-lənt How to pronounce sealant (audio) \

Medical Definition of sealant

: a plastic material that is applied to parts of teeth (as the occlusal surfaces of molars and premolars) with imperfections (as pits and fissures) usually to prevent dental decay

Comments on sealant

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