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Wiktionary
trans woman

alt. A male-to-female transgender or transsexual person. n. A male-to-female transgender or transsexual person.

Wikipedia
Trans woman

A trans woman (sometimes trans-woman or transwoman) is a transgender person who was assigned male at birth but whose gender identity is that of a woman. The label of transgender woman is not always interchangeable with that of transsexual woman, although the two labels are often used in this manner. Transgender is an umbrella term that includes different types of gender variant people (including transsexual people).