noun
28 Chinese lunar mansions
A traditional Chinese astronomical system dividing the ecliptic into 28 segments, each associated with a constellation. Used historically in East Asian calendars and astrology.
二十八宿は、古代中国の天文学で使われた星座の区分です。
The 28 lunar mansions are a division of constellations used in ancient Chinese astronomy.
From Chinese 二十八宿 (èrshíbā xiù), literally 'twenty-eight lodgings'. The term was adopted into Japanese with the on'yomi reading.