dissolution       
noun [ U ] uk/ˌdɪs.əˈluː.ʃən/ us/ˌdɪs.əˈluː.ʃən/
 (官方组织的)解散;(法律合约的)解除
the act or process of ending an official organization or legal agreement
  the dissolution of parliament 议会的解散 
 the dissolution of their marriage 他们婚姻关系的解除