Medical term for a surgical procedure that makes a person or animal unable to reproduce. Used in formal and clinical contexts.
She decided to undergo sterilization surgery.
Sterilization is a permanent method of contraception.
不妊手術 is the broader medical term for sterilization surgery in either sex, while 去勢 specifically refers to removal of the reproductive organs (usually testes).
forced sterilization; involuntary sterilization
Compound of 不妊 (infertility) and 手術 (surgery). The term is a direct medical borrowing from the concept of sterilization surgery.