validity validity /vəˈlɪdɪti/

noun

1. () The quality of being valid and rigorous  ( cogency , rigor [American] , rigour [Canadian, British] , validity )
   the quality of being valid and rigorous
     The validity of the experiment's results was confirmed through multiple trials.
   The validity of the experiment's results was confirmed through multiple trials.
   
2. () The quality of having legal force or effectiveness  ( validness , validity )
   the quality of having legal force or effectiveness