Transsexual, the term first derived in 1920's then used by Harry Benjamin in the 60's. Lately term transgender overshadows the above in the more vague though an attempt to bring the attention to the point of the matter.
However, said that, TRANS is nothing more then period of time during which ones struggle with definition of truthfulness of self is settled, and embraced as the point of beginning of inquiry, progress to truth, and strive towards congruity within self.
Once there, compelled by the own definition of ones comfort in being SELF, the individual is no longer TRANS, as he or she is no longer pursuing, but well within congruent being.
I would love to see a start of a revolution of the term which would begin to describe the complexity yet fulfillment of who one truly is, as I suspect, for most, being simply a woman or a man is precisely who they always were!!!