Definition - What does Demigirl mean?
A demigirl is someone who partially or half identifies as a woman, feminine, or a girl regardless of their sexual assignment at birth. A demigirl may also identify with another gender in addition to feeling partially like a girl.
Kinkly explains Demigirl
The term can also be used to define a female who was sexually assigned at birth and who feels disconnected with her identity. However, this disassociation is not large enough for gender dysphoria to occur. Alternatively, a sexually-assigned male at birth may partially identify with womanhood, but not enough that he would want to fully identify as a woman.