transsexual
/trænzˈsekʃuəl; trænz`sɛkʃʊəl/ n
1 person who emotionally feels himself or herself to be a member of the opposite sex 有异性转化欲的人.
2 person who has had his or her external sexual organs changed surgically in order to resemble the other sex （经外科手术）改变性别的人; 变性人.