secession
/sɪˈseʃən/noun
mass noun
1- the action of withdrawing formally from membership of a federation or body, especially a political state退出, 脱离：
the republics want secession from the union.
这些加盟共和国都想脱离联盟。
1.1
the Secession
historical the withdrawal of eleven Southern states from the US Union in 1860, leading to the Civil War〈史〉脱离联邦（1860年美国南部11州脱离联邦, 引起南北战争）。
派生词
secessional
adjectivesecessionism
nounsecessionist
noun词源
mid 16th cent. (denoting the withdrawal of plebeians from ancient Rome in order to compel the patricians to redress their grievances)： from French sécession or Latin secessio（n-）, from secedere 'go apart' （see SECEDE）.