Virilize: To cause a female to develop male characteristics such as a deepened voice, an increase in body and facial hair, a decrease in breast size, an enlargement of the clitoris, and 'male-pattern' baldness. Background Males produce hormones called androgens that cause them to develop typically male characteristics such as hair on the face and c... Found on http://www.medterms.com/script/main/art.asp?articlekey=12466