in reference to character, style, trait, or idiom felt to be from the Oriental nations, 1769, from oriental + -ism. In the sense of "the West's patronizing representations of societies and peoples of Asia, North Africa, and the Middle East" it was popularized in the 1978 book of that name by Palestinian intellectual Edward W. Said. Related: Orientalist.
orientalisms can be found in Mozart's operas
orgy
oriel
orient
Oriental
oriental
Orientalism
orientate
orientation
oriented
orienteering
orifice