About The Word Sidereal
Learn about the word Sidereal to help solve your crossword puzzle. Discover Sidereal definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Sidereal
| Sidereal Definition And Meaning |
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What's The Definition Of Sidereal?
[adj] (of divisions of time) determined by daily motion of the stars; "sidereal time"
[adj] of or relating to the stars or constellations; "sidereal bodies"; "the sidereal system" Synonyms | Synonyms for Sidereal: Related Terms | Find terms related to Sidereal: See Also | Sidereal In Webster's Dictionary \Si*de"re*al\, a. [L. sidereus, from sidus, sideris, a
constellation, a star. Cf. {Sideral}, {Consider}, {Desire}.]
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.
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