- 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.
- A hallucinogenic substance, visual display, music, or other sensory stimulus having such action.
[psyche- + G. deloo, to manifest]
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Examples: glitazone, GI cocktail, etc.