preventorium

noun
pre·​ven·​to·​ri·​um | \ ˌprē-vən-ˈtȯr-ē-əm How to pronounce preventorium (audio) \
plural preventoria\ -​ē-​ə How to pronounce preventoria (audio) \ also preventoriums

Medical Definition of preventorium

: an establishment where persons (as children) liable to develop disease (as tuberculosis) receive preventive care and treatment