sanitarium
From Longman Dictionary of Contemporary Englishsanitariumsan‧i‧tar‧i‧um /ˌsænəˈteəriəm $ -ˈter-/ noun [countable] x-refan American spelling of sanatoriumExamples from the Corpussanitarium• When the time came, Margarett was in a sanitarium.• He arrived on the train, freshly divorced, just out of a sanitarium after a bout with alcohol.• Finally he committed himself to a sanitarium, and after several months was sent home with a male companion.