Webster's Revised Unabridged Dictionary · 1913

Secession

Secession (se*sesh"un) , noun

[Latin secessio: compare French sécession. See Secede.]

1.
The act of seceding; separation from fellowship or association with others, as in a religious or political organization; withdrawal.
2.
(U.S. Hist.) The withdrawal of a State from the national Union.
Collocations (1)
Secession Church , (in Scotland). See Seceder.