1
: an official who attests or certifies conformity to a standard of correctness
2
a
: a coat (as of size) applied to prevent subsequent coats of paint or varnish from sinking in
b
: a compound applied to grout especially to repel moisture and prevent staining
Cleaned or newly colored grout will stay that way longer, and be easier to clean, if the grout is coated with a sealer.—
Gene Austin
Gene AustinExamples of sealer in a Sentence
Recent Examples on the Web
Mary Catherine McAnnally Scott, Southern Living, 30 Aug. 2025
Like an official letterhead that graces the top of old-school paper correspondence, or a signature at the end of a legal contract, a sealing carried the authority of the sealer, affirmed their identity, or verified a transaction.
—Literary Hub, 26 Aug. 2025
These sealers are used by companies that maintain tennis and pickleball courts.
—Tim Carter, Hartford Courant, 2 Aug. 2025
In addition to the chickens, Frank flushed his shoes down one of the toilets, Dennis and Dee kept blowing fuses with the scheme's need for a power-sucking vacuum sealer, and the basement was choked with carbon monoxide.
—Dennis Perkins, EW.com, 10 July 2025
See All Example Sentences for sealer
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Noun
Penetrating sealers can also protect a concrete surface from oil stains by creating a barrier that prevents stains and makes clean-up easier.
—Mary Catherine McAnnally Scott, Southern Living, 30 Aug. 2025
Like an official letterhead that graces the top of old-school paper correspondence, or a signature at the end of a legal contract, a sealing carried the authority of the sealer, affirmed their identity, or verified a transaction.
—Literary Hub, 26 Aug. 2025
These sealers are used by companies that maintain tennis and pickleball courts.
—Tim Carter, Hartford Courant, 2 Aug. 2025
In addition to the chickens, Frank flushed his shoes down one of the toilets, Dennis and Dee kept blowing fuses with the scheme's need for a power-sucking vacuum sealer, and the basement was choked with carbon monoxide.
—Dennis Perkins, EW.com, 10 July 2025
See All Example Sentences for sealer
Cite this Entry
“Sealer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sealer. Accessed 10 Sep. 2025.
Copy CitationKids Definition
sealer
1 of 2 noun
seal·er
ˈsē-lər 
1
: an official who certifies weights and measures
2
: a substance used on a surface to be painted that prevents the paint from sinking in
sealer
2 of 2 noun
: a person or a ship engaged in hunting seals
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