#dispersal__dispersion__dissemination__diffusion  the act of dispersing or diffusing something; "the dispersion of the troops"; "the diffusion of knowledge"
  supertype:  #spread__spreading  act of extending over a wider scope or expanse of space or time
  subtype:  #crop-dusting__spraying  the dispersion of fungicides or insecticides or fertilizer on growing crops (often from a low-flying aircraft)

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