dis·union /(ˌ)dɪsˈjunjən, dɪʃ-/
  分離,分裂,不統一
  Dis·un·ion n.
  1. The termination of union; separation; disjunction; as, the disunion of the body and the soul.
  2. A breach of concord and its effect; alienation.
     Such a disunion between the two houses as might much clou░ the happiness of this kingdom.   --Clarendon.
  3. The termination or disruption of the union of the States forming the United States.
     I have not accustomed myself to hang over the precipice of disunion.   --D. Webster.
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  disunion
       n : the termination or destruction of union [ant: union]