பொருள் : Of or relating to the stars or constellations.
எடுத்துக்காட்டு :
Sidereal bodies.
The sidereal system.
பொருள் : (of divisions of time) determined by daily motion of the stars.
எடுத்துக்காட்டு :
Sidereal time.
(of divisions of time) legally recognized in ordinary affairs of life.
The civil calendar.