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Pronunciation: si'ke-del'ik


  1. Pertaining to a rather imprecise category of drugs with mainly central nervous system action, and with effects said to be the expansion or heightening of consciousness, LSD, hashish, mescaline, psilocybin.
  2. A hallucinogenic substance, visual display, music, or other sensory stimulus having such action.

Synonym(s): hallucinogenic

[psyche- + G. deloo, to manifest]

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