psychedelic
adjective
[ ˌsʌɪkəˈdɛlɪk ]
• relating to or denoting drugs (especially LSD) that produce hallucinations and apparent expansion of consciousness.
• "psychedelic drugs"
psychedelic
noun
• a psychedelic drug.
Origin:
1950s: formed irregularly from psyche1 + Greek dēlos ‘clear, manifest’ + -ic.
