Medical Dictionary
Main Entry:
fem·i·nize Variant:
or British fem·i·nise /'fem-&-"nIz/ Function:
transitive verb Inflected Forms:
-nized or British -nised;
-niz·ing or British -nis·ing : to cause (a male or castrate) to take on feminine characters (as byimplantation of ovaries or administration of estrogenic substances) —
fem·i·ni·za·tion or British fem·i·ni·sa·tion /"fem-&-n&-'zA-sh&n/ noun
[fem-uh-nahyz] 
əˌnaɪz