psychedelia /ˌsaɪkəˈdiːljə/ noun Learner's definition of PSYCHEDELIA
[noncount]
: the art, music, style of living, etc., that is associated with psychedelic drugs and especially with the time in the 1960s when many people were using psychedelic drugs迷幻文化（与迷幻药有关的艺术、音乐、生活方式等，尤指20世纪60年代许多人吸食迷幻药的潮流）