From Longman Dictionary of Contemporary Englishdissidentdis‧si‧dent /ˈdɪsɪdənt/ noun [countable] PPGsomeone who publicly criticizes the government in a country where this is punished a political dissident —dissident adjective [only before noun] dissident writers —dissidence noun [uncountable]Origin dissident (1500-1600) Latin dissidere “to sit apart, disagree”, from sedere “to sit”