English Noun male pattern baldness (uncountable) (dermatology) A genetically predisposed loss of hair from the scalp in males, theorized to be caused by an excessive response to androgens, specifically dihydrotestosterone. Synonyms alopecia androgenetica alopecia hereditaria androgenetic alopecia androgenic alopecia Related terms female pattern baldness male pattern violence Wikiwand - on Seamless Wikipedia browsing. On steroids.