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WordReference Random House Learner's Dictionary of American English © 2024seal•ant /ˈsilənt/USA pronunciation n. [countable]- Chemistry, Buildinga liquid, paint, etc., that is applied to a surface and dries to form a watertight coating.
WordReference Random House Unabridged Dictionary of American English © 2024seal•ant (sē′lənt),USA pronunciation n. - Chemistrya substance used for sealing, as sealing wax or adhesives.
- Chemistry, Buildingany 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.
- Dentistryany 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.
- seal1 + -ant, probably by analogy with coolant 1940–45
Collins Concise English Dictionary © HarperCollins Publishers:: sealant /ˈsiːlənt/ n - any substance, such as wax, used for sealing documents, bottles, etc
- any of a number of substances used for stopping leaks, waterproofing wood, etc
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