Social Democratic party: Meaning and Definition of
So'cial Democrat'ic par'ty
- a political party in Germany advocating a form of social organization based on the economic and political ideology of Karl Marx.
- any of several European political parties advocating a gradual transition to socialism or a modified form of socialism by and under democratic processes.
- a U.S. political party, organized about 1897, that joined former members of the Socialist Labor party to form the Socialist party.