- a substance used for sealing, as sealing wax or adhesives.
- 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.
- 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.
Origin of sealant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sealant
He slapped down the lid and watched the sealant ooze around the seam.The Game of Rat and Dragon
- any substance, such as wax, used for sealing documents, bottles, etc
- any of a number of substances used for stopping leaks, waterproofing wood, etc
Word Origin and History for sealant
Online Etymology Dictionary, © 2010 Douglas Harper