impermeable

Adjective

Open English WordNet

Adjective (1)

  1. preventing especially liquids to pass or diffuse through“impermeable stone”“an impermeable layer of scum”“a coat impermeable to rain”Opposite permeableSimilar water-repellent, retentiveSee also tight, impervious
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haphazardadjective

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Webster's Dictionary (1913)

Im·per′me·a·ble adjective

Origin: Pref. im- not + permeable: cf. F. imperméable, L. impermeabilis.

Not permeable; not permitting passage, as of a fluid. through its substance; impervious; impenetrable; as, India rubber is impermeable to water and to air. — Im·per′wb-a1′>′me·a·ble·ness, noun — Im·per′wb-a1′>′me·a·bly, adverb

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54

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