epidemiology /ˌɛpəˌdiːmiˈɑːləʤi/ noun Learner's definition of EPIDEMIOLOGY
[noncount] medical
: the study of how disease spreads and can be controlled流行病学
— epidemiological
/ˌɛpəˌdiːmijəˈlɑːʤikəl/ also US epidemiologic /ˌɛpəˌdiːmijəˈlɑːʤɪk/ adjective — epidemiologist
/ˌɛpəˌdiːmiˈɑːləʤɪst/ noun, plural epidemiologists [count]