This word is also applied to the writings, art, movies and music that are inspired by or that enhance the psychedelic experience.
The term was coined by psychiatrist Humphrey Osmond, MD who was disatisfied with the old term used to describe the experience "psychomimetic" which alluded to the experience replicating psychosis.
More commonly now, since the age of psychedelia ended in the early-70s, the term is used solely to describe things that seem inspired by or seem to replicate the experience of mind-altering drugs. The term is most often applied to art that utilizes bright colours and bizarre patterns or music that uses strange, non-standard timing signatures, keys, chords, and the like. The term is somewhat synonymous with trippy.
Some of Pink Floyd's music sound really psychedelic.
Most of Andy Warhol's art is really psychedelic.
Person 2: Yes, Psychedelic by Jacob Daniel Kennedy.The trailer for the movie can be found at http://www.archive.org/details/PsychedelicPreview.
Person 1: Okay, thanks. I want to see a psychedelic movie because I am interested in being an animator.
Person 2: Cool. Good luck with that! Goodbye.
Person 1: Goodbye.
<hrh> i gotta get it then!