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psychedelic

Pronunciation: /ˈsaɪ.kəˌdɛl.ɪk/

The English word “psychedelic” has 4 meanings listed here.

adjective

  1. Of, containing, generating, or reminiscent of drug-induced altered awareness, distortions of perception, hallucinations, etc.
  2. Of graphics, etc.: having abstract shapes, bright colours, etc., reminiscent of drug-induced distortions of perception or hallucinations.
  3. Awesome, cool, groovy.

noun

  1. Any psychoactive substance (such as LSD or psilocybin) which, when consumed, causes perceptual changes (sometimes erratic and uncontrollable), visual hallucination, and altered awareness of the body and mind.

Etymology

From Ancient Greek ψυχή (psukhḗ, “mind, soul”) + δῆλος (dêlos, “manifest, visible”) + English -ic (prefix forming adjectives with the sense ‘of or pertaining to’), coined by the English psychiatrist Humphry Osmond (1917–2004) in a 1956 letter to Aldous Huxley.

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