What does " geriatric " truly mean ? Explore its definition , origin, and how this term applies to aging and healthcare. Geriatrics refers to medical care for older adults, an age group that is not easy to define precisely. Gerontology is the study of aging, including biologic, sociologic, and psychologic changes. Geriatrics refers to medical care for older adults , an age group that is not easy to define precisely. Gerontology is the study of aging, including biologic, sociologic, and psychologic changes. “Older” is preferred over "elderly," but both terms are equally imprecise. Geriatric means relating to old people, often disapprovingly, or an old person. Learn how to use geriatric in a sentence, find synonyms and antonyms, and see translations in different languages.