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
Briogeo Curl Charisma Hydrating Shampoo has ingredients like shea butter for use as a sealant to help hold moisture into your manly locks.
—
Amber Smith, Discover Magazine, 3 Apr. 2024
Give it a coat of sealant while the carpets are being steamed.
—Kathryn Weber, Charlotte Observer, 31 Jan. 2024
Investigators will check threads on any fasteners, any possible metal-on-metal contact, the state of any sealant used, and any possible deformations or flaws in material, Homendy said during the interview Monday.
—Jay Blackman, NBC News, 9 Jan. 2024
Hardwood floors: Even diluted vinegar can damage the sealant or finish that protects the wood and adds luster, leaving it looking dull and damaged, Cronin says.
—Stacey Colino, Washington Post, 6 Mar. 2024
Each child was assigned either traditional sealants or SDF, followed by a fluoride varnish.
—Melissa Willets, Parents, 9 Mar. 2024
Two of the cars that derailed had been holding nearly 386,000 pounds of acrylates, strong-smelling, highly irritating chemicals that are used to make paints, coatings, caulks and sealants.
—Brenda Goodman, CNN, 9 Mar. 2024
In many cases can get several additional years of service by coating the insides of these boxes with pruning sealant prior to planting.
—Neil Sperry, Fort Worth Star-Telegram, 26 Jan. 2024
With the sealant, the threads survived for more than 3 months and 50 wash cycles.
—IEEE Spectrum, 18 Jan. 2024
Amber Smith, Discover Magazine, 3 Apr. 2024
Give it a coat of sealant while the carpets are being steamed.
—Kathryn Weber, Charlotte Observer, 31 Jan. 2024
Investigators will check threads on any fasteners, any possible metal-on-metal contact, the state of any sealant used, and any possible deformations or flaws in material, Homendy said during the interview Monday.
—Jay Blackman, NBC News, 9 Jan. 2024
Hardwood floors: Even diluted vinegar can damage the sealant or finish that protects the wood and adds luster, leaving it looking dull and damaged, Cronin says.
—Stacey Colino, Washington Post, 6 Mar. 2024
Each child was assigned either traditional sealants or SDF, followed by a fluoride varnish.
—Melissa Willets, Parents, 9 Mar. 2024
Two of the cars that derailed had been holding nearly 386,000 pounds of acrylates, strong-smelling, highly irritating chemicals that are used to make paints, coatings, caulks and sealants.
—Brenda Goodman, CNN, 9 Mar. 2024
In many cases can get several additional years of service by coating the insides of these boxes with pruning sealant prior to planting.
—Neil Sperry, Fort Worth Star-Telegram, 26 Jan. 2024
With the sealant, the threads survived for more than 3 months and 50 wash cycles.
—IEEE Spectrum, 18 Jan. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sealant.' 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
1944, in the meaning defined at sense 1
Dictionary Entries Near sealant
Cite this Entry
“Sealant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sealant. Accessed 19 Apr. 2024.
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Medical Definition
sealant
noun
seal·ant
ˈsē-lənt 
: 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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