toxicology
noun [ U ] uk/ˌtɒk.sɪˈkɒl.ə.dʒi/ us/ˌtɑːk.sɪˈkɑː.lə.dʒi/
毒理学，毒物学
the scientific study of the characteristics and effects of poisons
toxicologist
noun [ C ] uk/ˌtɒk.sɪˈkɒl.ə.dʒɪst/ us/ˌtɑːk.sɪˈkɑː.lə.dʒɪst/
毒理学家，毒物专家
a person who studies or knows a lot about poisons