柯林斯詞典gerontology /?d??r?n?t?l?d??/ 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. 老年學(xué) 返回 gerontology劍橋詞典the study of old age and of the changes it causes in the body 年學(xué)；老年病學(xué)，老年醫(yī)學(xué) 返回 gerontology