Pronunciation: (dou'iz-um, tou'-),[key] —n. 1. the philosophical system evolved by Lao-tzu and Chuang-tzu, advocating a life of complete simplicity and naturalness and of noninterference with the course of natural events, in order to attain a happy existence in harmony with the Tao.
2. Also called Hsüan Chiao. a popular Chinese religion, originating in the doctrines of Lao-tzu but later highly eclectic in nature and characterized by a pantheon of many gods and by the practice of alchemy, divination, and magic.