Male-To-Female Meaning

(electronics, of an adapter) That changes a male end (with pins, usually a plug) of a connection into a female one (usually a socket).

Example: Used other than as an idiom: see female,‎ to,‎ male.
  the male-to-female ratio is 5-to-3
Changing or having changed (via gender reassignment surgery) from being physically male to being female.
Changing or having changed from having a male gender (gender identity or presentation) to being female.