日にっ周しゅう運うん動どう

noun

diurnal motion

Astronomy term for the apparent daily motion of celestial bodies across the sky due to Earth's rotation.

• 星ほしの日にっ周しゅう運うん動どうは、地ち球きゅうの自じ転てんによって起おこる。

  The diurnal motion of stars is caused by the Earth's rotation.