Source : Webster's Revised Unabridged Dictionary (1913)

Deconcentrate \De`con*cen"trate\, v. t.
   To withdraw from concentration; to decentralize. [R.]

Source : WordNet®

deconcentrate
     v : make less central; "After the revolution, food distribution
         was decentralized" [syn: {decentralize}, {decentralise}]
         [ant: {centralize}, {centralize}, {centralize}]