天てん体たい学がく

noun

uranography

A formal, somewhat dated term for the mapping and description of celestial bodies; in modern contexts often replaced by 天文学 (astronomy) or more specific terms.

• 彼かれは天てん体たい学がくの古ふるい文ぶん献けんを研けん究きゅうしている。

  He is studying old texts on uranography.