LeninismPronunciation: /ˈlɛnɪnɪz(ə)m/Definition of Leninism noun [mass noun] Marxism as interpreted and applied by Lenin. Derivatives Leninist noun & adjective Leninite noun & adjective Origin: early 20th century: named after Lenin (see Lenin, Vladimir Ilich)Leninism in other Oxford dictionaries Definition of Leninism in the US English dictionary