Sidereal (Adjective)
Meaning 1
Of or relating to the stars or constellations; "sidereal bodies"; "the sidereal system".
Classification
Relational adjectives (pertainyms).
Examples
- Astronomers use sidereal time to track the movements of celestial objects in the night sky.
- The sidereal day is approximately 23 hours and 56 minutes, which is the time it takes the Earth to rotate once on its axis relative to the stars.
- The planet's sidereal year is the time it takes to complete one orbit around the sun, which is different from its tropical year.
- The ancient Greeks believed that the sidereal system was inhabited by gods and goddesses who influenced human affairs.
- By analyzing the motion of sidereal bodies, astronomers can infer the presence of dark matter in the universe.
Related Words
Meaning 2
(of divisions of time) determined by daily motion of the stars; "sidereal time".
Classification
All adjective clusters.