American English

Definition of psychedelic adjective from the Oxford Advanced American Dictionary



    [usually before noun]
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  1. 1(of drugs) causing the user to see and hear things that are not there or that do not exist (= to hallucinate )
  2. 2(of art, music, clothes, etc.) having bright colors, strange sounds, etc. like those that are experienced when taking psychedelic drugs
See the Oxford Advanced Learner's Dictionary entry: psychedelic