Source : Webster's Revised Unabridged Dictionary (1913)

Sanitarium \San`i*ta"ri*um\, n. [NL. See {Sanitary}.]
   A health station or retreat; a sanatorium. ``A sanitarium for
   troops.'' --L. Oliphant.

Source : WordNet®

sanitarium
     n : a hospital for recuperation or for the treatment of chronic
         diseases [syn: {sanatorium}, {sanatarium}]
     [also: {sanitaria} (pl)]