health main·te·nance or·ga·ni·za·tion /-ˈmentnən(t)sˌɔrg(ə)nəˈzeʃən, ˈmentṇən(t)s-/ 名詞
  health maintenance organization
       n : group insurance that entitles members to services of
           participating hospitals and clinics and physicians [syn:
           HMO]