English

Definition of impervious adjective from the Oxford Advanced Learner's Dictionary

     

    impervious

     adjective
    adjective
    BrE BrE//ɪmˈpɜːviəs//
     
    ; NAmE NAmE//ɪmˈpɜːrviəs//
     
     
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  1. 1impervious to something not affected or influenced by something impervious to criticism/pain She was impervious to his charms.
  2. 2(specialist) not allowing a liquid or gas to pass through an impervious rock/layer impervious to something impervious to moisture
  3. Word Origin mid 17th cent.: from Latin impervius (from in- ‘not’ + pervius ‘permeable’) + -ous.
See the Oxford Advanced American Dictionary entry: impervious