geriatricsPronunciation: /dʒɛrɪˈatrɪks/Translate geriatrics | into Italian Definition of geriatrics noun [treated as singular or plural] the branch of medicine or social science dealing with the health and care of old people. Derivatives geriatricianPronunciation: /-əˈtrɪʃ(ə)n/ noun geriatrics in other Oxford dictionaries Definition of geriatrics in the US English dictionary