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English definition of “impermeable”

impermeable

adjective uk   /ɪmˈpɜː.mi.ə.bl̩/ us    /-ˈpɝː-/
not allowing liquid or gas to go through: an impermeable membraneThe state of matter
(Definition of impermeable from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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