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Definition of Impenetrable


  1. Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
  2. Having the property of preventing any other substance from occupying the same space at the same time.
  3. Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart.

Impenetrable Translations

impenetrable in Dutch is ondoordringbaar
impenetrable in German is undurchdringlich
impenetrable in Latin is impenetrabiilis
impenetrable in Norwegian is ugjennomtrengelig