From Longman Dictionary of Contemporary EnglishMarxism-LeninismˌMarxism-ˈLeninism noun [uncountable] the ideas of Marxism as explained and added to by the Russian leader Lenin, who believed in the ‘dictatorship of the proletariat’ (=when government is controlled by a combination of industrial workers and poor farm workers) as part of the process of achieving revolution —Marxist-Leninist noun, adjective