An Etymological Dictionary of Astronomy and Astrophysics

A star that is never seen above the horizon from a given position. These stars are located between the celestial pole and a diurnal circle with an angular distance larger than the altitude of the pole.

Etymology (EN): Nonrising, from → non- + rising adj. of → rise; → star.

Etymology (PE): Setâré, → star; hamiše penhân, literally “always hidden,” coined by Biruni (A.D. 973-1050) in his at-Tafhim, from hamišé “always” (Mid.Pers. hamêšag “always”) + penhân “hidden.”