noun
surgical castration; neutering; orchiectomy
Medical term for surgical removal of the testes; used for both humans and animals. In veterinary contexts, 'neutering' is common.
犬の去勢手術は、望まれない繁殖を防ぐために行われることが多い。
Canine neutering is often performed to prevent unwanted breeding.
去勢手術後は、ホルモンバランスが変化することがある。
After surgical castration, hormonal balance may change.