so·cial·ism (sÅ쳌’shÉ™-lÄ­z’əm) n.
1. Any of various theories or systems of social organization in which the means of producing and distributing goods is owned collectively or by a centralized government that often plans and controls the economy.
2. The stage in Marxist-Leninist theory intermediate between capitalism and communism, in which collective ownership of the economy under the dictatorship of the proletariat has not yet been successfully achieved.