n. [ Zion + -ism. ] Among the Jews, a theory, plan, or movement for colonizing their own race in Palestine, the land of Zion, or, if that is impracticable, elsewhere, either for religious or nationalizing purposes; -- called also Zion movement. -- Zi"on*ist, n. -- Zi`on*is"tic a. [ Webster 1913 Suppl. ]