stellar precession
gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis
en-GB/ˈstɛlə pɹɪˈsɛʃən/
en-US/ˈstɛlɚ pɹiˈsɛʃən/
gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis