Related topics: Sociology, Medicine
ger·on·tol·o·gy /ˌdʒerɒnˈtɒlədʒi $ ˌdʒerənˈtɑː-/ noun [uncountableU] SSMthe scientific study of old age and its effects on the body 老年学 → geriatrics
—gerontologist noun [countableC]
—gerontological /dʒəˌrɒntəˈlɒdʒɪkəl◂ $ -ˌrɑːntəˈlɑː-/ adjectiveadj