sidereal : Idioms & Phrases
Index
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.
Webster 1913
Sidereal clock , day , month , year
- . See under
Clock ,Day , etc.
Webster 1913
sidereal day
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noun the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
day.
WordNet
sidereal hour
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noun 1/24 of a sidereal day
WordNet
sidereal month
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noun period between successive conjunctions with a star, 27.322 days
WordNet
sidereal time
-
noun measured by the diurnal motion of stars
WordNet
sidereal year
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noun the time for the earth to make one complete revolution around the sun, relative to the fixed stars
