As
hatless so aptly points out, Bolshevik means "the
majority," however, the "
Bolsheviks" were not only outnumbered, they were greatly outnumbered. The
Bolsheviks were followers of
Lenin and adhered to a
Marxist-Leninist approach to
socialism. They believed that the only way to bring about the
communist future, the
proletariat revolution, was through
violent revolution.
The Mensheviks, on the other hand, were cleary the actual "majority" of the Socialists in Russia at the turn of the 20th century. They believed that, in a world where governments were increasingly democratic, therefore far more vulnerable to the will of the people than ever before, that the Socialists could take power and bring about the Revolution through peaceful means - the ballot box.
Ironically, the names given to the respective parties were given by Lenin himself, when, at a significant socialist meeting in 1903 when the Russian Jews, a significant portion of the Mensheviks, walked out (offended by the anti-Semitism that was present in the party, as everywhere else in the world). Because a large portion of the Menshevik faction had abruptly left, Lenin seized his temporary majority, a huge opportunity, and took control of the party.