n.
The time required for a complete rotation of the earth in reference to any star or to the vernal equinox at the meridian, equal to 23 hours, 56 minutes, 4.09 seconds in units of mean solar time.
sidereal day
| Dictionary: sidereal day |
n.
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| WordNet: sidereal day |
The noun has one meaning:
Meaning #1:
the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
Synonym: day
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 | sidereal hour |
| geosynchronous orbit (aerospace engineering) |
| semisynchronous satellite (aerospace engineering) |
 | Which day is shorter sidereal or solar? Read answer... |
| What is the length of Mercury's sidereal day? Read answer... |
| How long is One day on Mars in sidereal days? Read answer... |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more |
Related answers
- Explain how solar day differs from a sidereal day?
- What is a sidereal day?
- What is the length of a sidereal day on saturn?
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Answer these
- The difference in the lengths of a mean solar day and a sidereal day is about?
- Similarities between sidereal day and solar day?
Mentioned in
- sidereal hour
- geosynchronous orbit (aerospace engineering)
- semisynchronous satellite (aerospace engineering)
- sidereal
- geosynchronous
- day (astronomy)
- geosynchronous satellite (aerospace engineering)
- sidereal time (unit – in astronomy)
- Foucault pendulum
- day (time)
- day
- hour
- Giovanni Battista Riccioli (Italian astronomer)
- right ascension (astronomy)
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