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Word of the Day Tuesday, June 9, 2026

sealant

/ˈsiːlənt/ noun · British & US
Valid in UKValid in US
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What does sealant mean?

noun

A substance used to make a surface watertight or airtight, or to fill gaps or cracks in a surface. A sealant is often used to prevent water or air from entering a joint or gap.

Example

"The contractor applied a sealant to the window frame to prevent water from seeping in during heavy rainfall."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for sealant

Rhymes with sealant

Etymologically related