[ ˌsʌɪkə'dɛlɪk ]
■ adjective
1》 relating to or denoting drugs (especially LSD) that produce hallucinations and apparent expansion of consciousness.
2》 (of music, especially rock) characterized by musical experimentation and drug-related lyrics.
3》 having an intense, vivid colour or a swirling abstract pattern.
■ noun a ~ drug.
Derivatives
~ally adverb
Origin
1950s: formed irregularly from psyche + Gk dēlos 'clear, manifest' + -ic .