adj.
Of, characterized by, or generating hallucinations, distortions of perception, altered states of awareness, and occasionally states resembling psychosis.
n.
A drug, such as LSD or mescaline, that produces such effects.
[PSYCHE1 + Greek dēloun, to make visible (from dēlos, clear, visible) + -IC.]
psychedelically psy'che·del'i·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
