n. a drug that produces hallucinations, e.g. *cannabis and *lysergic acid diethylamide. Hallucinogens were formerly used to treat certain types of mental illness. —hallucinogenic adj.
Compounds characterised by their ability to produce distortions of perception, emotional changes, depersonalisation, and a variety of effects on memory and learned behaviour. They include CANNABIS, LYSERGIC ACID DIETHYLAMIDE (LSD) and MESCALINE. (See also DEPENDENCE.)... hallucinogens
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