seal·​ant | \ ˈsē-lənt \

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

Once all of the paint has dried, spray your finished pumpkin with a sealant spray to protect the paint from chipping, or washing away in the rain. Alyssa Fiorentino, House Beautiful, "This Is The Best Way To Paint A Pumpkin," 9 Oct. 2018 Joan talks to Jayme about sealants, fluoride, and enamel and tells her about a dental office that provides free cleanings to kids under 6. Tracy Saelinger, Woman's Day, "This Nurse Helps New Moms When They're Most Vulnerable," 8 Jan. 2019 This one is pretty easy: Power wash the chimney, then spray the bricks with a sealant. Kevin Dupzyk, Popular Mechanics, "So You Want To Fix Your Chimney," 21 Dec. 2018 Location: Typically grows in home systems like humidifiers, cooling coils, drain pans, and window sealants. Taylor Mead, House Beautiful, "How To ID The Different Kinds Of Mold In Your House—And Their Cause," 17 Sep. 2018 That past explosion happened after water accumulated in a manhole and traps that were supposed to have relieved pressure became clogged with sealant. Amy Lieu, Fox News, "Steam pipe inspections, cleanup will take days, NYC mayor says, amid asbestos concerns," 20 July 2018 Under its plan, CRC will cover the costs of reapplying the sealant to the panels every 10-years. Washington Post, "Flawed Silver Line concrete to get additional inspections," 22 May 2018 For one thing, the substance applied in rejuvenating an asphalt roadway is not as thick as the sealant applied to driveways and parking lots. Dan Moran, Lake County News-Sun, "Moran: Lake County looks to rejuvenate pavement before wear-and-tear sets in," 6 July 2018 Keith Couch, CRC’s project director, told MWAA’s board of directors that the company would deal with the issue by treating the panels every 10 years with a sealant to ensure materials meet the 100-year life span required in their contract. Washington Post, "Metro says it will do independent inspections of Silver Line concrete," 17 May 2018

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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Statistics for sealant

Last Updated

3 Feb 2019

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Time Traveler for sealant

The first known use of sealant was in 1944

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English Language Learners Definition of sealant

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


seal·​ant | \ ˈsē-lənt \

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

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