- German socialist in England: collaborated with Karl Marx in systematizing Marxism.
- a city in the Russian Federation in Europe, on the Volga River, opposite Saratov.
- Friedrich (ˈfriːdrɪç). 1820–95, German socialist leader and political philosopher, in England from 1849. He collaborated with Marx on The Communist Manifesto (1848) and his own works include Condition of the Working Classes in England (1844) and The Origin of the Family, Private Property and the State (1884)
