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
Wound paint or sealant is not necessary and is now considered harmful.
—
Carl R. Gold, Baltimore Sun, 13 Jan. 2025
Look out for gaps where caulking or sealant has pulled away from the window frame.
—Rabekah Henderson, Southern Living, 11 Jan. 2025
Yet even with the proliferation of fluoride-containing toothpastes and dental sealants, tooth decay is still the most common chronic disease affecting American children, and the average senior citizen is missing at least 10 permanent teeth.
—Karen Kaplan, Los Angeles Times, 6 Jan. 2025
Advertisement Elsewhere on Wall Street, H.B. Fuller sank 7.5% after the seller of adhesives, sealants and other specialty chemical products said it’s recently seen a slowdown in sales to a number of its customer categories.
—Stan Choe, Los Angeles Times, 2 Jan. 2025
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Carl R. Gold, Baltimore Sun, 13 Jan. 2025
Look out for gaps where caulking or sealant has pulled away from the window frame.
—Rabekah Henderson, Southern Living, 11 Jan. 2025
Yet even with the proliferation of fluoride-containing toothpastes and dental sealants, tooth decay is still the most common chronic disease affecting American children, and the average senior citizen is missing at least 10 permanent teeth.
—Karen Kaplan, Los Angeles Times, 6 Jan. 2025
Advertisement Elsewhere on Wall Street, H.B. Fuller sank 7.5% after the seller of adhesives, sealants and other specialty chemical products said it’s recently seen a slowdown in sales to a number of its customer categories.
—Stan Choe, Los Angeles Times, 2 Jan. 2025
See all Example Sentences for sealant
Dictionary Entries Near sealant
Cite this Entry
“Sealant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sealant. Accessed 8 Feb. 2025.
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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