PSYCHEDELIC

I. noun see: deity Date: 1956 a ~ drug (as LSD), II. adjective Date: 1957 1. of, relating to, or being drugs (as LSD) capable of producing abnormal psychic effects (as hallucinations) and sometimes psychotic states, produced by or associated with the use of ~ drugs , imitating, suggestive of, or reproducing effects (as distorted or bizarre images or sounds) resembling those produced by ~ drugs , ~ally adverb