se·ces·sion 
(sĭ-sĕshən)
(sĭ-sĕshən)n.
1. The act of seceding.
2. often Secession The withdrawal of 11 Southern states from the Union in 1860-1861, precipitating the US Civil War.
[Latin sēcessiō, sēcessiōn-, from sēcessus, past participle of sēcēdere, to secede; see SECEDE.]
se·cession·al adj.
- at one's elbow
- at (one's) expense
- at one's expense
- at (one's) fingertips
- at one's fingertips
- at (one's) leisure
- at one's leisure
- at (one's) wits' end
- at one's wits' end
- at one time
- atonic
- atonicity
- atony
- atop
- atopic
- atopy
- -ator
- atorvastatin
- -atory
- a tough row to hoe
- atovaquone
- atoxic
- ATP
- ATPase
- at peace