marxism(n = noun.cognition) - the economic and political theories of Karl Marx and Friedrich Engels that hold that human actions and institutions are economically determined and that class struggle is needed to create historical change and that capitalism will ultimately be superseded by communism;
is a kind of communism
Derived form noun marxist₁

   A system of economic and political thought, originated by Karl Marx, and elaborated by others. It holds that the state has been the a device for suppression of the masses, allowing exploitation by a dominant (capitalistic) class; that historical change occurs through class struggle; and that the capitalist system will inevitably wither away to be superseded by a classless society. [PJC]

marxism, n. the political and economic theories of Karl Marx, Ger. political philosopher (d. 1883), predicting the overthrow of capitalism and the eventual attainment of a classless society with the State controlling the means of production.

Idiom:
Marxism-Leninism Marxism as developed by Lenin.

Derivative:
Marxist n. & adj. Marxist-Leninist n. & adj.