si·de·re·al (s -dîr  - l)adj. 1. Of, relating to, or concerned with the stars or constellations; stellar. 2. Measured or determined by means of the apparent daily motion of the stars: sidereal time. [From Latin s dereus, from sdus, sder-, constellation, star.] |
sidereal [saɪˈdɪərɪəl]
adj
1. (Astronomy) of, relating to, or involving the stars
2. (Astronomy) determined with reference to one or more stars the sidereal day
[from Latin sīdereus, from sīdus a star, a constellation]
sidereally adv
| sidereal (s-dîr-l) 1. Relating to the stars or constellations. 2. Measured with respect to the background of fixed stars instead of the Sun. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Adj. | 1. | sidereal - of or relating to the stars or constellations; "sidereal bodies"; "the sidereal system" |
| 2. | sidereal - (of divisions of time) determined by daily motion of the stars; "sidereal time" civil - (of divisions of time) legally recognized in ordinary affairs of life; "the civil calendar"; "a civil day begins at mean midnight" |
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