transsexualism (n.)youdaoicibaDictYouDict[transsexualism 词源字典]
"intense desire to change one's sexual status, including the anatomical structure," 1953, coined by U.S. physician Harry Benjamin (1885-1986) from trans- + sexual. Transsexuality is recorded from 1941, but was used at first to mean "homosexuality" or "bisexuality." In the current sense from 1955.[transsexualism etymology, transsexualism origin, 英语词源]