[san.a.to.ri.um] n, pl -riums or -ria [NL, fr. LL, neut. of sanatorius curative, fr. sanare] (1839) 1: an establishment that provides therapy combined with a regimen (as of diet and exercise) for treatment or rehabilitation
2. a: an institution for rest and recuperation (as of convalescents) b: an establishment for the treatment of the chronically ill