noun
Onmyōdō astrology; nine-star astrology
A form of astrology based on the nine stars of traditional Onmyōdō cosmology, used for fortune-telling and character analysis.
See also: 九星
九星占いで今日の運勢を調べた。
I checked today's fortune using nine-star astrology.
彼女は九星占いを信じている。
She believes in nine-star astrology.
陰陽道 is the broader traditional cosmology; 九星占い is a specific astrological method within it.
Compound of 九星 (nine stars) and 占い (fortune-telling). The nine stars are a concept from Onmyōdō, derived from Chinese cosmology.