Sideral
Pronunciation: /ˈsɪdəɹəl/
Sideral (adj)
- Related to measuring time by the apparent position of stars, not by the Sun.
- Describing an orbit or rotation measured against distant stars as reference points.
Sideral (adjective)
Examples
- The calendar uses sideral time to track the night sky.
- Sideral time helps sailors estimate when stars will rise.