Onmyōdō; way of Yin and Yang; occult divination system based on the Taoist theory of the five elements
Bureau of Onmyō; government office in charge of astronomical observations, divination and calendar making (under the ritsuryō system)
diviner (esp. of the Yin and Yang system); sorcerer; exorcist; School of Yin-yang (China); School of Naturalists