Source : Webster's Revised Unabridged Dictionary (1913)

Vanish \Van"ish\, v. i. [imp. & p. p. {Vanished}; p. pr. & vb.
   n. {Vanishing}.] [OE. vanissen, OF. vanir (in comp.): cf. OF.
   envanir, esvanir, esvanu["i]r, F. s'['e]vanouir; fr. L. vanus
   empty, vain; cf. L. vanescere, evanescere, to vanish. See
   {Vain}, and cf. {Evanescent},{-ish}.]
   1. To pass from a visible to an invisible state; to go out of
      sight; to disappear; to fade; as, vapor vanishes from the
      sight by being dissipated; a ship vanishes from the sight
      of spectators on land.

            The horse vanished . . . out of sight. --Chaucer.

            Go; vanish into air; away!            --Shak.

            The champions vanished from their posts with the
            speed of lightning.                   --Sir W.
                                                  Scott.

            Gliding from the twilight past to vanish among
            realities.                            --Hawthorne.

   2. To be annihilated or lost; to pass away. ``All these
      delights will vanish.'' --Milton.

Source : WordNet®

vanished
     adj : having passed out of existence; "vanished civilizations"