sadism: a paraphilia of the sacrificial/expiatory type in which sexuoerotic arousal and facilitation or attainment of orgasm are responsive to and contingent on [and dependent upon] being the authority who variously imposes abuse, torture, punishment, discipline, humiliation, obedience, and servitude (named after the Marquis de Sade, 1740-1814, French author and sadist). The reciprocal paraphilic condition is
masochism.
Dictionary of Sexology Project: Main Index