丸まる天てん井じょう

noun

arched ceiling; vaulted ceiling; domed ceiling; circular ceiling

Refers to a ceiling that is curved or rounded, such as an arch, vault, dome, or circular shape. Used in architectural contexts.

• 教きょう会かいの丸まる天てん井じょうには美うつくしい絵えが描えがかれている。

  Beautiful paintings are drawn on the arched ceiling of the church.

• この部屋へやは丸まる天てん井じょうになっていて、開かい放ほう感かんがある。

  This room has a vaulted ceiling, giving a sense of openness.