psy ‧ che ‧ del ‧ ic /ˌsaɪkəˈdelɪk◂, ˌsaɪkɪˈdelɪk◂/ BrE AmE adjective [usually before noun]
[ Date: 1900-2000 ; Language: Greek ; Origin: psych- ( ⇨ ↑ psych- ) + deloun 'to show' ]
1 . psychedelic drugs such as ↑ LSD make you ↑ hallucinate (=see things that do not exist)
2 . having or using bright colours or strange sounds, and representing the experiences people have when they use drugs such as ↑ LSD :
a psychedelic light show
Fashion designers look back to the 1960s with dazzling psychedelic prints.
—psychedelically /-kli/ adverb
—psychedelia /-ˈdiːliə/ noun [uncountable] :
sixties psychedelia