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1. (adj.) sidereal
determined by or from the stars.
2. sidereal
of or pertaining to the stars.
Etymology: (1625–35; < L sīdere(us) <sīder-, s. of sīdus star, constellation +al1)
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| Definition of 'sidereal' |
Princeton's WordNet |
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1. (adj) sidereal
of or relating to the stars or constellations
"sidereal bodies"; "the sidereal system"
2. (adj) sidereal
(of divisions of time) determined by daily motion of the stars
"sidereal time"
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| Definition of 'sidereal' |
Webster Dictionary |
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1. (adj) sidereal
relating to the stars; starry; astral; as, sidereal astronomy
2. (adj) sidereal
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
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Definitions of sidereal 
