A trans woman or transgender woman is a woman who was assigned male at birth. Many trans women experience gender dysphoria resulting from the incongruence between their female gender identity and male sex assignment, which can be alleviated through gender transition.
The term trans woman is sometimes used interchangeably with the earlier medical term male-to-female transsexual, though the latter refers specifically to those seeking medical transition, and is generally considered outdated. Someone assigned female at birth with a male gender identity is called a trans man. The opposite of transgender is cisgender. Trans women may have any sexual and romantic orientation, including being straight (attracted to men), lesbian (attracted to women), or bisexual.