scientific socialism
/ˌsʌɪənˌtɪfɪk ˈsəʊʃəlɪz(ə)m/ /ˌsʌɪənˌtɪfɪk ˈsəʊʃ(ə)lɪz(ə)m/noun
In Marxist theory: a form of socialism based on an empirical and historical analysis of the economic and political factors necessary for social change; especially. Marxism itself. Opposed to utopian socialism.
Origin
Mid 19th century; earliest use found in The Daily News. From scientific + socialism, originally after French socialisme scientifique.