seal·​ant ˈsē-lənt How to pronounce sealant (audio)
: a sealing agent
a radiator sealant
: 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 The sealant protects the tooth from getting a cavity by shielding against bacteria and plaque.6 Sealants are more common in children because of the new growth of permanent teeth, however, sealants can benefit adults also. Tammy Davenport, Verywell Health, 28 May 2024 Apply sealant to the fitting, then tighten it onto your barrel. Viveka Neveln, Better Homes & Gardens, 16 May 2024 And despite a 2019 ban keeping it out of consumer paint-stripping products, the chemical is still widely available in other items — from aerosol degreasers to sealants. Jamie Smith Hopkins, USA TODAY, 14 May 2024 Jernigan likes using a tinted wax sealant at the end for DIY furniture projects to get a gorgeous low-luster matte sheen. Nor'adila Hepburn, Better Homes & Gardens, 10 May 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.

Word History

First Known Use

1944, in the meaning defined at sense 1

Time Traveler
The first known use of sealant was in 1944

Dictionary Entries Near sealant

Cite this Entry

“Sealant.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2024.

Medical Definition


seal·​ant ˈsē-lənt How to pronounce sealant (audio)
: 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
Last Updated: - Updated example sentences
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