psychedelia

[ sahy-ki-deel-yuh, -del-yuh ]
/ ˌsaɪ kɪˈdil yə, -ˈdɛl yə /

noun

the realm or artifacts of psychedelic drugs, art, writings, or the like.

Origin of psychedelia

An Americanism dating back to 1965–70; psychedel(ic) + -ia

British Dictionary definitions for psychedelia

psychedelia
/ (ˌsaɪkəˈdɛlɪə, -ˈdiːlɪə) /

noun

(functioning as singular or plural) psychedelic objects, dress, music, etc