Source : Webster's Revised Unabridged Dictionary (1913)

Feminization \Fem`i*ni*za"tion\, n.
   The act of feminizing, or the state of being feminized.

Source : WordNet®

feminization
     n : the process of becoming feminized; the development of female
         characteristics (loss of facial hair or breast
         enlargement) in a male because of hormonal disorders or
         castration [syn: {feminisation}]