| slovo | definícia |
Sideral
(gcide) | Sideral \Sid"er*al\, a. [L. sideralis. See Sidereal.]
1. Relating to the stars.
[1913 Webster]
2. (Astrol.) Affecting unfavorably by the supposed influence
of the stars; baleful. "Sideral blast." --Milton.
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Sideral time
(gcide) | 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.
[1913 Webster]
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.
[1913 Webster]
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.
[1913 Webster] |
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