plebiscite |ˈplɛbɪsʌɪt, -sɪt| noun the direct vote of all the members of an electorate on an important public question such as a change in the constitution. the administration will hold a plebiscite for the approval of constitutional reforms. • Roman History a law enacted by the plebeians’ assembly. DERIVATIVES plebiscitary |-ˈbɪsɪt(ə)ri| adjective ORIGIN mid 16th…