Sezession Syllabification: (Se·zes·sion)Pronunciation: /ˌzetˌsesēˈōn/ (also Secession)Definition of Sezession noun (the Sezession) a radical movement involving groups of avant-garde German and Austrian artists who, from 1892, organized exhibitions independently of the traditional academies. The Vienna Secession founded by Gustav Klimt in 1897 helped to launch the Jugendstil. Origin:German, literally 'secession'Sezession in other Oxford dictionaries Definition of Sezession in the British & World English dictionary