noun
Medical term for a surgical procedure that makes a person or animal unable to reproduce. Used in formal and clinical contexts.
彼女は不妊手術を受けることに決めた。
She decided to undergo sterilization surgery.
不妊手術は避妊のための恒久的な方法です。
Sterilization is a permanent method of contraception.
避妊手術 is a broader term for contraceptive surgery, while 不妊手術 specifically refers to sterilization procedures that result in permanent infertility.
Compound of 不妊 (infertility) and 手術 (surgery). The term is a direct medical borrowing from the concept of sterilization surgery.