/ Thesaurus / H Synonyms of health maintenance organization Find synonyms for: Noun1. health maintenance organization, HMO, health insuranceusage: group insurance that entitles members to services of participating hospitals and clinics and physiciansWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language