noun
[ U ] the act of changing a person's sex by a medical operation in which parts of their body are changed so that they become like a person of the opposite sex
noun
[ U ] the act of changing a person's sex by a medical operation in which parts of their body are changed so that they become like a person of the opposite sex
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005