Se‐ces″sion (sē̍‐sĕsh″ŭn), n. [L. secessio: cf. F. 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.
Secession Church (in Scotland). See Seceder.