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2017 Word of the Year

sidereal year

noun, Astronomy.
1.
year (def 4c).
Origin of sidereal year
1675-1685
First recorded in 1675-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for sidereal year

sidereal year

noun
1.
See year (sense 5)
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 Value for sidereal

9
10
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