permeable

Pronunciation

• IPA ^(key): /ˈpɜː(r)miəbəl/

• Audio (UK)

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Adjective

Positive permeable

Comparative more permeable

Superlative most permeable

1. A substance is permeable if it lets some gases or liquids to pass through it.
   • Antonym: impermeable

   Earthenware is a solid substance which is permeable to small amounts of water.

   Biological cell walls are semi-permeable because they let water and some gases pass through, but stop larger molecules.