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
Their protective patina, sealants, and coatings can be damaged due to the high-pressure cleaning process.
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Patricia Shannon, Southern Living, 21 Sep. 2024
Caulking is a mold magnet even though its purpose is to be a moisture sealant.
—Mary Cornetta, Better Homes & Gardens, 7 Sep. 2024
Generally, a wood floor has a protective sealant to help prevent damage to the wood, but the sealant can wear off over time, especially in high-traffic areas of the home.
—Timothy Dale, Better Homes & Gardens, 6 Sep. 2024
Oak flooring is ideal for homeowners who want to showcase the wood's natural beauty with a clear or lightly tinted sealant.
—Nafeesah Allen, Better Homes & Gardens, 2 July 2024
See all Example Sentences for sealant 
Patricia Shannon, Southern Living, 21 Sep. 2024
Caulking is a mold magnet even though its purpose is to be a moisture sealant.
—Mary Cornetta, Better Homes & Gardens, 7 Sep. 2024
Generally, a wood floor has a protective sealant to help prevent damage to the wood, but the sealant can wear off over time, especially in high-traffic areas of the home.
—Timothy Dale, Better Homes & Gardens, 6 Sep. 2024
Oak flooring is ideal for homeowners who want to showcase the wood's natural beauty with a clear or lightly tinted sealant.
—Nafeesah Allen, Better Homes & Gardens, 2 July 2024
See all Example Sentences for sealant
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.
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Cite this Entry
“Sealant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sealant. Accessed 1 Oct. 2024.
Copy CitationMedical 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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