Source : Webster's Revised Unabridged Dictionary (1913)

Dispersed \Dis*persed"\, a.
   Scattered. -- {Dis*pers"ed*ly}, adv. -- {Dis*pers"ed*ness},
   n.

   {Dispersed harmony} (Mus.), harmony in which the tones
      composing the chord are widely separated, as by an octave
      or more.