穹きゅう窿りゅう

noun

vault of heaven; vaulted sky

Poetic or literary term for the sky as a vast dome or arch. Rare in everyday conversation; found in classical or descriptive writing.

• 夜よ空ぞらを見み上あげると、穹きゅう窿りゅうに無む数すうの星ほしが輝かがやいていた。

  Looking up at the night sky, countless stars shone in the vault of heaven.

noun

dome; vault; arch

Architectural sense: a dome or arched vault. Also rare and literary; modern technical terms like ドーム or アーチ are more common.

• 教きょう会かいの穹きゅう窿りゅうには美うつくしいフレスコ画がが描えがかれている。

  Beautiful frescoes are painted on the vault of the church.