— secessional , adj.
/si sesh"euhn/ , n.
1. an act or instance of seceding.
2. ( often cap. ) U.S. Hist. the withdrawal from the Union of 11 Southern states in the period 1860-61, which brought on the Civil War.
3. ( usually cap. ) Fine Arts. a style of art in Germany and Austria concurrent with and related to Art Nouveau.
[ 1525-35; secession- (s. of secessio ) withdrawal, equiv. to secess ( us ) (ptp. of secedere to SECEDE; see CESSION) + -ion- -ION ]