validityPronunciation: /vəˈlɪdɪti/Translate validity | into German | into Italian Definition of validity noun [mass noun] the quality of being logically or factually sound; soundness or cogency:one might question the validity of our data the state of being legally or officially binding or acceptable:return travel must be within the validity of the ticketvalidity in other Oxford dictionaries Definition of validity in the US English dictionary
