psychedelic

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psychedelic

, psychodelic
1. relating to or denoting new or altered perceptions or sensory experiences, as through the use of hallucinogenic drugs
2. denoting any of the drugs, esp LSD, that produce these effects
3. Informal (of painting, fabric design, etc.) having the vivid colours and complex patterns popularly associated with the visual effects of psychedelic states
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

psychedelic

[‚sī·kə′del·ik]
(psychology)
Of, pertaining to, or producing a psychic state.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.