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View synonyms for sidereal year

sidereal year

noun

, Astronomy.
  1. a division of time equal to the equinoctial year plus 20 minutes, representing the time required for the earth to complete one revolution around the sun, measured with relation to the fixed stars.


sidereal year

noun

  1. See year
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of sidereal year1

First recorded in 1675–85
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Example Sentences

In reducing these days to years the sidereal year was taken as the Standard year.

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