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  1. Dictionary
    impermeable
    /ɪmˈpəːmɪəbl/

    adjective

    • 1. not allowing fluid to pass through: "an impermeable membrane"

    More definitions, origin and scrabble points

  2. not allowing liquid or gas to go through: an impermeable membrane. Synonyms. impenetrable. impervious (SUBSTANCE) specialized. Compare. waterproof adjective. watertight (NO WATER) weatherproof adjective. Opposite. permeable formal. SMART Vocabulary: related words and phrases. Physics: the state of matter. absorbency. acidic. allotropic.

  3. : not permitting passage (as of a fluid) through its substance. broadly : impervious. impermeability. (ˌ)im-ˌpər-mē-ə-ˈbi-lə-tē. noun. Synonyms. impassable. impassible. impenetrable. impervious. impregnable. See all Synonyms & Antonyms in Thesaurus. Examples of impermeable in a Sentence. an impermeable layer of rock a fabric impermeable to moisture

  4. Something that is impermeable does not allow water or liquid to pass through it. Made up of the prefix im-, meaning “not,” and the adjective permeable, meaning “allowing to pass through,” impermeable is used in much the same way as impervious or impenetrable.

  5. Impermeable definition: not permeable; impassable.. See examples of IMPERMEABLE used in a sentence.

  6. not allowing liquid or gas to go through: an impermeable membrane. Synonyms. impenetrable. impervious (SUBSTANCE) specialized. Compare. waterproof adjective. watertight (NO WATER) weatherproof adjective. Opposite. permeable formal. SMART Vocabulary: related words and phrases. Physics: the state of matter. absorbency. acidic. allotropic.

  7. adjective. Something that is impermeable will not allow fluid to pass through it. [formal] The canoe is made from an impermeable wood. Synonyms: impenetrable, resistant, impervious, waterproof More Synonyms of impermeable. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers. Word Frequency.

  8. Definition of impermeable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  9. impermeable - preventing especially liquids to pass or diffuse through; "impermeable stone"; "an impermeable layer of scum"; "a coat impermeable to rain"

  10. Jun 8, 2024 · impermeable (comparative more impermeable, superlative most impermeable) Impossible to permeate. Not allowing passage, especially of liquids; waterproof.

  11. impermeable meaning, definition, what is impermeable: not allowing liquids or gases to pass th...: Learn more.