Overwhelmingly desirous of being, or completely identifying with, the opposite sex.
1. A person who has undergone a sex change operation.
2. A person whose sexual identification is entirely with the opposite sex.
Person who identifies himself or herself completely with the opposite sex, believing that the wrong sex was assigned at birth. Unlike transvestites, who desire to dress in clothes traditionally worn by the opposite sex; transsexuals think and feel emotionally in a way typically considered appropriate to members of the opposite sex, and may undergo surgery to modify external sexual characteristics.