Pronunciation: (mas'u-kiz"um, maz'-),[key] —n. 1. Psychiatry.the condition in which sexual gratification depends on suffering, physical pain, and humiliation.
2. gratification gained from pain, deprivation, degradation, etc., inflicted or imposed on oneself, either as a result of one's own actions or the actions of others, esp. the tendency to seek this form of gratification.
3. the act of turning one's destructive tendencies inward or upon oneself.
4. the tendency to find pleasure in self-denial, submissiveness, etc.