1) BDSM terminology 2) Masochism 3) Sadism 1) Owbusiness 
Sadomasochism is the giving or receiving of pleasure—sometimes sexual—from acts involving the infliction or reception of pain or humiliation. A subset of BDSM, practitioners of sadomasochism usually seek out sexual gratification from these acts, but can also seek out other forms of personal pleasure. While the terms sadist and masochist specif...
A form of perversion marked by enjoyment of cruelty and/or humiliation in its received or active and/or dispensed and passive form. ... Origin: sadism + masochism ... (05 Mar 2000) ... 
(sa″do-mas´ә-kiz-әm) a state characterized by both sadistic and masochistic tendencies. adj., sadomasochis´tic., adj.
Type: Term Pronunciation: sā′dō-mas′ŏ-kizm, sad-o- Definitions: 1. A form of perversion marked by enjoyment of cruelty and/or humiliation in its received or active and/or dispensed and passive forms.
[n] - sadism and masochism combined in one person
sado-masochism, sadomasochism 1. The existence of both sadism and masochism in a person. 2. The practice of deriving sexual pleasure from inflicting pain on another person; as well as, having pain inflicted on oneself by another person.
noun sadism and masochism combined in one person
Sexual behaviour that combines sadism and masochism. The term was coined in 1907 by sexologist Richard von Krafft-Ebing