Source : Webster's Revised Unabridged Dictionary (1913)

Verify \Ver"i*fy\, v. t. [imp. & p. p. {Verified}; p. pr. & vb.
   n. {Verifying}.] [F. v['e]rifier, LL. verificare, from L.
   verus true + -ficare to make. See {Very}, and -fy.]
   1. To prove to be true or correct; to establish the truth of;
      to confirm; to substantiate.

            This is verified by a number of examples. --Bacon.

            So shalt thou best fulfill, best verify. The
            prophets old, who sung thy endless reign. --Milton.

   2. To confirm or establish the authenticity of by examination
      or competent evidence; to authenciate; as, to verify a
      written statement; to verify an account, a pleading, or
      the like.

            To verify our title with their lives. --Shak.

   3. To maintain; to affirm; to support. [Obs.] --Shak.

Source : WordNet®

verifying
     adj : serving to support or corroborate; "collateral evidence"
           [syn: {collateral}, {confirmative}, {confirming}, {confirmatory},
            {corroborative}, {corroboratory}, {substantiating}, {substantiative},
            {validating}, {validatory}, {verificatory}]