Masturbation / Onanism
Masturbation refers to self-stimulation, meaning the sexual stimulation of one’s own genitals or other sexually sensitive body areas by the person themselves. The term onanism is sometimes used synonymously, though it is somewhat dated. Masturbation is a common form of sexual activity and can take place alone or with another person.
Depending on the context, masturbation may be purely self-directed, or it may be part of partnered sex, petting, or safer-sex practices. If sex toys or aids are used, hygiene and material compatibility should be observed. If pain, injury, or uncertainty occurs, it is advisable to adjust the technique or stop.