a form of communism based on the writings of Marx and Lenin; called also Marxism-Leninism.

the political and economic theories of Lenin which provided the guiding doctrine of the Soviet Union; the modification of Marxism by Lenin stressed that imperialism is the highest form of capitalism (which shifts the struggle from developed to underdeveloped countries)

Leninism refers to various related political and economic theories elaborated by Bolshevik revolutionary leader Vladimir Lenin, and by other theorists who claim to be carrying on Lenin's work. Leninism builds upon and elaborates the ideas of Marxism, and serves as the philosophical basis for Communism and the pre-Stalin government of the Soviet Union.