Definition of sealant noun from the Oxford Advanced Learner's Dictionary

 

sealant

 noun
noun
BrE BrE//ˈsiːlənt//
 
; NAmE NAmE//ˈsiːlənt//
 
(also sealer)[uncountable, countable]
 
jump to other results
a substance that is put onto a surface to stop air, water, etc. from entering or escaping from it
See the Oxford Advanced American Dictionary entry: sealant