Sex change; changing one's biological or social sex, often involving medical procedures such as gender-affirming surgery or hormone therapy.
彼は性転換手術を受けて名前も変えた。
He underwent a sex-change operation and also changed his name.
性転換は個人の選択であり、医療的なサポートが必要になることが多い。
Sex change is a personal choice and often requires medical support.
最近、性転換に関する社会的議論が活発になっている。
Recently, social discussions about sex change have become active.