sexual release; taking care of one's sexual urges
A direct, somewhat clinical or blunt term for dealing with sexual desire, often implying masturbation or a transactional act. Not a euphemism; can sound crude or technical depending on context.
Some people go to sex establishments for sexual release.
He seems to be dating solely for sexual gratification.
Compound of 性欲 (sexual desire) and 処理 (processing, handling, disposal). The term is straightforward and modern, with no special historical derivation.