hallucinogen /həˈluːsənəʤən/ noun plural hallucinogens
plural hallucinogens
Learner's definition of HALLUCINOGEN
[count]
: a substance (such as a drug) that causes people to see or sense things that are not real : a substance that causes hallucinations致幻剂；幻觉剂
— hallucinogenic
/həˌluːsənəˈʤɛnɪk/ adjective