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

      

    validation

     noun
    noun
    BrE BrE//ˌvælɪˈdeɪʃn//
     
    ; NAmE NAmE//ˌvælɪˈdeɪʃn//
     
    (formal)
     
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  1. 1[uncountable, countable] the act of proving that something is true or correct There must be some form of external validation of the data.
  2. 2[uncountable, countable] the act of making something legally valid validation of web service contracts
  3. 3[uncountable, countable] the act of stating officially that something is useful and of an acceptable standard an agreement on the validation of the institution's degree courses
  4. 4[uncountable] the feeling of recognition from others that you are right or good enough We seek validation from our peers.