sealant

[see-luhnt]

noun

1. a substance used for sealing, seal, as sealing wax or adhesives.

2. 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.

3. 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.

sealant

/ ˈsiːlənt /

noun

1. any substance, such as wax, used for sealing documents, bottles, etc

2. any of a number of substances used for stopping leaks, waterproofing wood, etc

Word History and Origins

Origin of sealant¹

1940–45; seal ¹ + -ant, probably by analogy with coolant

Example Sentences

The sealant has been investigated for use in nerve repair, bone healing, and restoring movement following spinal cord injury.

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The other applies to home upgrades that include windows, doors and sealants that can better insulate a home from high and low temperatures.

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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.

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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.

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Within those pipes, the catalyst could generate a polymer that could act as a sealant to heal cracks in the pipes, which are a common source of methane leakage.

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Related Words

• adhesive 
• mud 
• plaster 
• sand