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English definition of “psychedelic”

psychedelic

adjective    /ˌsɑɪ·kɪˈdel·ɪk/
causing unusually strong experiences of color , sound , smell , taste , and touch , and other mental effects such as feelings of deep understanding or hallucination (= imagining things that do not exist ) Psychedelic also means likely to produce a strong effect because of having bright colors or patterns .
(Definition of psychedelic adjective from the Cambridge Academic Content Dictionary © Cambridge University Press)
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