English

Definition of validity noun from the Oxford Advanced Learner's Dictionary

      

    validity

     noun
    noun
    BrE BrE//vəˈlɪdəti//
     
    ; NAmE NAmE//vəˈlɪdəti//
     
    [uncountable]
     
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  1. 1the state of being legally or officially acceptable The period of validity of the agreement has expired.
  2. 2the state of being logical and true We had doubts about the validity of their argument.
  3. Extra examples His reputation lends a certain validity to the approach that it might not deserve. The judges upheld the validity of the previous judgement. The legal validity of the claims has been challenged. The results are of doubtful validity. The theory has the face validity of being consistent with recent findings. the theory’s validity for parent-child relationships to assess the scientific validity of new treatments Of course we recognize the validity of that argument.
See the Oxford Advanced American Dictionary entry: validity