English Explanatory Dictionary

impermeable

English dictionary entry

Meanings

adj
  1. Impossible to permeate.
  2. Not allowing passage, especially of liquids; waterproof.

Pronunciation

/ɪmˈpɜːmɪəbəl/ LL-Q1860 (eng)-Vealhurl-impermeable.wav LL-Q1860 (eng)-Usmaan (Middle river exports)-impermeable.wav /ɪmˈpɝmɪəbəl/ /ɪmˈpɝmiəbəl/

Word forms

impermeable more impermeable most impermeable

Etymology

Apparently from im- + permeable. Compare French imperméable, from Latin impermeābilis, from im- + permeābilis (“permeable”).

Synonyms

nonpermeable sealed

Antonyms

permeable

Related words

impermeability permeability hermetically sealed impenetrable

Derived words

impermeableness impermeably
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