/ Thesaurus / S Synonyms of sanatarium Find synonyms for: Noun1. sanatorium, sanatarium, sanitarium, hospital, infirmaryusage: a hospital for recuperation or for the treatment of chronic diseasesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language