Transsexual

A person who does not identify with the sex they were born with and is transitioning to the gender with which they identity, usually (but not always) with medical assistance.

Transsexual is often considered to be an older, formerly correct, term for being transgender that, while still in use by some, has largely been replaced by transgender. Some people may find the word transsexual offensive.

This term still sees regular use within the porn industry to such a degree that many have begun to use it to reference for transgender pornstars specifically.