Sidereal

[Si*de·re*al]

Far out, man. I mean really far out as in related to the distant stars of the universe. That's what sidereal means.

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Relating to the stars; starry; astral; as, sidereal astronomy.

Adjective
(of divisions of time) determined by daily motion of the stars; "sidereal time"

Adjective
of or relating to the stars or constellations; "sidereal bodies"; "the sidereal system"

a.
Relating to the stars; starry; astral; as, sidereal astronomy.

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.

Sidereal

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.

Relating to the stars; starry; astral; as, sidereal astronomy.

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Usage Examples
Misspelled Form

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