Definitions for "Sidereal"
Keywords:  starry, astronomy, stars, synodic, min
Relating to the stars; starry; astral; as, sidereal astronomy.
Measuring by the apparent motion of the stars; designated, marked out, or accompanied, by a return to the same position in respect to the stars; as, the sidereal revolution of a planet; a sidereal day.
time measured in relation to the fixed stars: the length of a sidereal day is 23 hr, 56 min, 4.09 sec of mean solar time.
Keywords:  stellar