Definition of impervious in English:

impervious

Line breaks: im|per¦vi|ous
Pronunciation: /ɪmˈpəːvɪəs
 
/

adjective

1Not allowing fluid to pass through: an impervious layer of basaltic clay
More example sentences
  • The coatings are weldable and impervious to automotive and hydraulic fluids.
  • This impervious drape allows a 3-sq inch opening at the femoral site and covers the patient from head to toe.
  • In other words, it's not impervious to moisture but it will get you through an afternoon cloudburst.
Synonyms
impermeable, impenetrable, impregnable, waterproof, watertight, water-resistant, water-repellent; sealed, hermetically sealed
rare imperviable
2 (impervious to) Unable to be affected by: he worked, apparently impervious to the heat
More example sentences
  • The administration seems indifferent to data, impervious to competing viewpoints and ideas.
  • Our council seem impervious to criticism and oblivious to basic common sense.
  • Young and oddly confident, they are blind to their deficiencies and impervious to the daunting odds stacked against them.
Synonyms

Origin

mid 17th century: from Latin impervius (from in- 'not' + pervius 'pervious') + -ous.

Derivatives

imperviously

adverb
More example sentences
  • From years of denial and austere behavioural therapy groups - whether in school or privately with a psychiatrist - there are some who are imperviously self-conscious and rely heavily on medication to mask whatever symptoms may surface.
  • The two Virginians were shrewd men with an imperviously close bond and an impressive degree of patience and self-control.
  • She is strangely dissociated from her husband, whose disembodied voice, imperviously reciting poetry, ‘struck close upon her ears.’

imperviousness

noun
More example sentences
  • The imperviousness to facts and analysis is also there.
  • I fear his intense, mind-beating politeness, his titanium imperviousness to human weakness, his barking power-laugh.
  • Their knife, which originated in Japan, is known for its smooth-rocking motion and imperviousness to acids, juices, oils and salts - unlike its steel sister.

Definition of impervious in:

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