Thesaurus: sidereal

Related headwords

Definitions

1. a. Relating to the stars; starry; astral; as, sidereal astronomy.
2. a. 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.
3. adj. of or relating to the stars or constellations
4. adj. (of divisions of time) determined by daily motion of the stars
5. 1. Relating to the stars; starry; astral; as, sidereal astronomy. 2. (Astron.) 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. Sidereal clock, day, month, year. See under Clock, Day, etc. -- Sideral time, time as reckoned by sideral days, or, taking the sidereal day as the unit, the time elapsed since a transit of the vernal equinox, reckoned in parts of a sidereal day. This is, strictly, apparent sidereal time, mean sidereal time being reckoned from the transit, not of the true, but of the mean, equinoctial point.
6. Measuring by the apparent motion of the stars; designated,marked out, or accompanied, by a return to the same position inrespect to the stars; as, the sidereal revolution of a planet; asidereal day. Sidereal clock, day, month, year. See under Clock, Day,etc.-- Sideral time, time as reckoned by sideral days, or, taking thesidereal day as the unit, the time elapsed since a transit of thevernal equinox, reckoned in parts of a sidereal day. This is,strictly, apparent sidereal time, mean sidereal time being reckonedfrom the transit, not of the true, but of the mean, equinoctialpoint.
7. j:100 a. of or relating to the stars or constellations a. (of divisions of time) determined by daily motion of the stars