/ Dictionary / Index S sanatorium: Meaning and Definition of Find definitions for: san•a•to•ri•um Pronunciation: (san"u-tôr'ē-um, -tōr'-), [key] — pl. -to•ri•ums, -to•ri•a a hospital for the treatment of chronic diseases, as tuberculosis or various nervous or mental disorders. sanitarium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sanatorium (Thesaurus) sanative sanatory Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language