资料来源 : Webster's Revised Unabridged Dictionary (1913)

Zionism \Zi"on*ism\, 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.

资料来源 : WordNet®

Zionist
     n : a Jewish supporter of Zionism

Zionist
     adj 1: relating to or characteristic of Zionism; "the Zionist
            movement"
     2: relating to or characteristic of a supporter of Zionism;
        "the Zionist leader Theodor Herzl"