a republic in central Europe: ruled by the Hapsburgs from 1282 to 1918; formed a dual monarchy with Hungary in 1867 and became a republic in 1919; a member of the European Union; contains part of the Alps, the Danube basin in the east, and extensive forests. Official language: German. Religion: Roman Catholic majority. Currency: euro. Capital: Vienna. Pop: 8 735 453 (2017 est). Area: 83 849 sq km (32 374 sq miles)