noun
tenmondō; form of astrology
Historical term for a specific form of astrology practiced in pre-modern Japan, often associated with Onmyōdō. Not used in modern contexts.
平安時代には、天文道が陰陽寮で教えられていた。
In the Heian period, tenmondō was taught at the Onmyōryō (Bureau of Divination).
Modern term for astrology in general; 天文道 is a historical, specialized term.
Compound of 天文 (tenmon, 'astronomy') and 道 (dō, 'way, path'), referring to the 'way of astronomy/astrology' as a traditional discipline. The exact historical derivation is uncertain; the term is associated with ancient Chinese-influenced astrological practices adopted in Japan.