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Definition of hallucinogen noun from the Oxford Advanced Learner's Dictionary

hallucinogen

noun
 
/həˈluːsɪnədʒen/
 
/həˈluːsɪnədʒen/
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  1. a drug, such as LSD, that affects people’s minds and makes them see and hear things that are not really thereTopics Social issuesc2
See hallucinogen in the Oxford Advanced American Dictionary
previously
adverb
 
 
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