sealant
Americannoun
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sealants
plural
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a substance used for sealing, as sealing wax or adhesives.
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any of various liquids, paints, chemicals, or soft substances that may be applied to a surface or circulated through a system of pipes or the like, drying to form a hard, watertight coating.
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Dentistry. any of several transparent synthetic resins applied to the chewing surfaces of molars and premolars in young children and teenagers as a preventive measure against tooth decay in the occlusal pits and fissures.
noun
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any substance, such as wax, used for sealing documents, bottles, etc
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any of a number of substances used for stopping leaks, waterproofing wood, etc
Other Word Forms
Noun Inflected Forms
Etymology
Origin of sealant
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
David Hearn was indicted for allegedly peeling off a portion of newly installed sealant on one of Trump’s pet projects.
From The Wall Street Journal ● Jul. 4, 2026
The pool was clouded with algae within days of being refilled and large pieces of the new sealant could be seen peeling from the bottom.
From BBC ● Jul. 2, 2026
He said, “Leaks to radiators can be very difficult to repair and hopefully this chemical sealant will do the trick.”
From MarketWatch ● Feb. 7, 2026
One result of this research is CEVAP's patented fibrin sealant, described as a "biological glue."
From Science Daily ● Nov. 18, 2025
Beneath the sealant, a red light flicked on.
From "Artemis Fowl" by Eoin Colfer
RPM, with a market capitalization of about $14.4 billion, makes coatings, sealants and building materials, such as Plastic Wood, Rust-Oleum and Zinsser.
From The Wall Street Journal ● Jan. 16, 2026
The other applies to home upgrades that include windows, doors and sealants that can better insulate a home from high and low temperatures.
From MarketWatch ● Nov. 10, 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.
From Los Angeles Times ● Jan. 6, 2025
These included manufacturing defects affecting parts of fuselages, tail and rudder assemblies, as well as sealants applied as protection against the effect of lightning strikes in central fuel tanks.
From BBC ● Dec. 27, 2024
The market for 3-HP, used in components of disposable diapers and sealants, exceeds $1 billion, and research to date shows huge promise, Zhao said.
From Science Daily ● Oct. 3, 2023
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
