Definition of male-to-female
adjective
1relating to or denoting interaction or transfer between a male and a female:male-to-female aggression
2denoting or relating to a person who is born male and subsequently adopts the identity or appearance of a female, especially one who has undergone gender reassignment:the male-to-female transgendered community
noun
a person who is born male and subsequently adopts the identity or appearance of a female, especially one who has undergone gender reassignment:people are becoming aware that transsexual doesn’t only refer to male-to-females