Source : Webster's Revised Unabridged Dictionary (1913)

Disband \Dis*band"\ (?; see {Dis-}), v. t. [imp. & p. p.
   {Disbanded}; p. pr. & vb. n. {Disbanding}.] [Pref. dis- +
   band: cf. OF. desbander, F. d['e]bander, to unbind, unbend.
   See {Band}, and cf. {Disbend}, {Disbind}.]
   1. To loose the bands of; to set free; to disunite; to
      scatter; to disperse; to break up the organization of;
      especially, to dismiss from military service; as, to
      disband an army.

            They disbanded themselves and returned, every man to
            his own dwelling.                     --Knolles.

   2. To divorce. [Obs.]

            And therefore . . . she ought to be disbanded.
                                                  --Milton.

Disband \Dis*band"\, v. i.
   To become separated, broken up, dissolved, or scattered;
   especially, to quit military service by breaking up
   organization.

Source : WordNet®

disband
     v 1: cause to break up or function; "the principal disbanded the
          political student organization"
     2: stop functioning or cohering as a unit; "The political wing
        of the party dissolved after much internal fighting" [syn:
         {dissolve}]