The Collaborative International Dictionary of English v.0.48:

Disperse \Dis*perse"\, v. t. [imp. & p. p. Dispersed; p. pr. &
   vb. n. Dispersing.] [L. dispersus, p. p. of dispergere to
   strew, scatter. See Sparse.]
   1. To scatter abroad; to drive to different parts; to
      distribute; to diffuse; to spread; as, the Jews are
      dispersed among all nations.
      [1913 Webster]

            The lips of the wise disperse knowledge. --Prov. xv.
                                                  7.
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            Two lions, in the still, dark night,
            A herd of beeves disperse.            --Cowper.
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   2. To scatter, so as to cause to vanish; to dissipate; as, to
      disperse vapors.
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            Dispersed are the glories.            --Shak.

   Syn: To scatter; dissipate; dispel; spread; diffuse;
        distribute; deal out; disseminate.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dispersed \Dis*persed"\, a.
   Scattered. -- Dis*pers"ed*ly, adv. -- Dis*pers"ed*ness,
   n.
   [1913 Webster]

   Dispersed harmony (Mus.), harmony in which the tones
      composing the chord are widely separated, as by an octave
      or more.
      [1913 Webster]

WordNet (r) 3.0 (2006):

dispersed
    adj 1: distributed or spread over a considerable extent; "has
           ties with many widely dispersed friends"; "eleven million
           Jews are spread throughout Europe" [syn: dispersed,
           spread]

Moby Thesaurus II by Grady Ward, 1.0:

98 Moby Thesaurus words for "dispersed":
   aimless, alienated, amorphous, broadcast, capricious, casual,
   deflected, deflective, desultory, detached, diffracted,
   diffractive, diffuse, diffused, disarticulated, disconnected,
   discontinuous, discrete, disengaged, disjoined, disjoint,
   disjointed, disjunct, dislocated, disordered, dispread,
   disproportionate, disseminated, dissipated, distorted, distributed,
   disunited, divided, divorced, erratic, estranged, fitful,
   flectional, flexed, formless, frivolous, gratuitous, haphazard,
   hit-or-miss, immethodical, inchoate, incoherent, indiscriminate,
   inflective, irregular, isolated, meaningless, misshapen,
   nonsymmetrical, nonsystematic, nonuniform, orderless, planless,
   promiscuous, random, refracted, refractile, refractive,
   refrangible, removed, scattered, segregated, senseless, separated,
   sequestered, shapeless, shut off, skew, skewed, sparse, spasmodic,
   sporadic, spread, straggling, straggly, strewn, strown, systemless,
   unarranged, unclassified, undirected, ungraded, unjoined,
   unmethodical, unordered, unorganized, unsorted, unsymmetrical,
   unsystematic, ununiform, vague, wandering, widespread