toxicology /ˌtɑːksəˈkɑːləʤi/ noun Learner's definition of TOXICOLOGY
[noncount] technical
: the study of poisonous chemicals, drugs, etc., and how a person or other living thing reacts to them毒理学；毒物学 —
often used before another noun常用于另一名词前 — toxicologist
/ˌtɑːksəˈkɑːləʤɪst/ noun, plural toxicologists [count]