From Longman Dictionary of Contemporary Englishgerontologyger‧on‧tol‧o‧gy /ˌdʒerɒnˈtɒlədʒi $ ˌdʒerənˈtɑː-/ noun [uncountable] SSMthe scientific study of old age and its effects on the body → geriatrics —gerontologist noun [countable] —gerontological /dʒəˌrɒntəˈlɒdʒɪkəl◂ $ -ˌrɑːntəˈlɑː-/ adjective
Examples from the Corpus
gerontology• Specialized practice, particularly child care, metal health, gerontology and residential work.• Sue Punton, the senior sister at the hospital's gerontology department believes that essential oils help geriatric patients in several ways.Origin gerontology (1900-2000) Greek geron “old man” + English -ology 