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Definition of dissociation:

  1. The act of dissociating or disuniting; a state of separation; disunion.
  2. The process by which a compound body breaks up into simpler constituents; -- said particularly of the action of heat on gaseous or volatile substances; as, the dissociation of the sulphur molecules; the dissociation of ammonium chloride into hydrochloric acid and ammonia.



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