Source : WordNet®

verification
     n 1: additional proof that something that was believed (some fact
          or hypothesis or theory) is correct; "fossils provided
          further confirmation of the evolutionary theory" [syn: {confirmation},
           {check}, {substantiation}]
     2: (law) an affidavit attached to a statement confirming the
        truth of that statement

Source : Free On-Line Dictionary of Computing

verification
     
        The process of determining whether or not the products of a
        given phase in the life-cycle fulfil a set of established
        requirements.