Medical Definition of sanatorium
plural san·a·to·ri·ums or san·a·to·ria \-ē-ə\play
1: an establishment that provides therapy combined with a regimen (as of diet and exercise) for treatment or rehabilitation
2a: an institution for rest and recuperation (as of convalescents)b: an establishment for the treatment of the chronically ill <a tuberculosis sanatorium>
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