hirsutism Syllabification: (hir·sut·ism)Pronunciation: /ˈhərso͞oˌtizəm, hərˈso͞o-, ˈhi(ə)rˌso͞o-/Definition of hirsutism noun Medicine abnormal growth of hair on a person’s face and body, especially on a woman. hirsutism in other Oxford dictionaries Definition of hirsutism in the British & World English dictionary