渾こん天てん儀ぎ

noun

armillary sphere

Historical astronomical instrument consisting of a model of the celestial sphere with rings representing the equator, ecliptic, etc. Used in East Asian astronomy.

See also: 天球儀

• 渾こん天てん儀ぎは、古こ代だい中ちゅう国ごくで天てん体たいの位い置ちを測はかるために使つかわれた。

  The armillary sphere was used in ancient China to measure the positions of celestial bodies.