masculinize

UK: /ˈmæskjʊlɪnˌaɪz/ US: (mas′kyə lə nīz′)

WordReference Random House Unabridged Dictionary of American English © 2026

mas•cu•lin•ize  (mas′kyə lə nīz′), v.t., -ized, -iz•ing. 

1. Medicine to produce certain male secondary sex characteristics in (a female).
2. to make masculine in character, quality, or appearance:
   The presence of two large leather sofas seemed to masculinize the whole room.

Also,[esp. Brit.,] mas′cu•lin•ise′. 

• masculine + -ize 1920–25

mas′cu•lin•i•za′tion, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

masculinize, masculinise / ˈmæskjʊlɪnˌaɪz/ verb

1. to make or become masculine
2. to cause (a female animal) to develop male characteristics

ˌmasculiniˈzation, ˌmasculiniˈsation noun