impermeable

US /ɪmˈpɝː.mi.ə.bəl/
UK /ɪmˈpɝː.mi.ə.bəl/
"impermeable" picture
1.

not allowing fluid to pass through

:
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The new roof is completely impermeable to water.
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The material used for the raincoat is impermeable.
:
permeableporous