hospitalise /ˈhɒspɪtəˌlaɪz/ verb5 •To send to hospital; to admit (a person) to hospital. •To cause (a person) to require hospitalization. •Said of an injury or illness.Shortly after World War I started, a painful arthritis in his knees hospitalized him. — 1980 •Said of an assailant or other person.One teacher in a Rochester, NY, school was hospitalized by an angry parent who came to school and attacked the teacher. — 2001 •(no longer used) To render (a building) unfit for habitation, by long continued use as a hospital. formshospitalising · hospitalises