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English definition of “sealant”

sealant

noun [C or U] uk   /ˈsiː.lənt/ us  
a substance such as paint or polish that is painted onto a surface to protect it from other liquids going into it, or is put in the space between two materials for the same reasonBuilding materialsCoverings and layers
(Definition of sealant from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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