柯林斯词典gerontology /ˌdʒɛrɒnˈtɒlədʒɪ/ 1. N-UNCOUNT Gerontology is the study of the process by which we get old, how our bodies change, and the problems that old people have. 老年学 返回 gerontology剑桥词典the study of old age and of the changes it causes in the body 年学；老年病学，老年医学 返回 gerontology