sanatorium /ˌsænəˈtorijəm/ noun plural sanatoriums or sanatoria /-ˈtorijə/ /ˌsænəˈtorijə/ plural sanatoriums or sanatoria /-ˈtorijə/ /ˌsænəˈtorijə/ Learner's definition of SANATORIUM
[count] old-fashioned
: a place for the care and treatment of people who are recovering from illness or who have a disease that will last a long time疗养院;休养所 — called also (US) sanitarium, (US) sanitorium