sidereal year

sidereal year

noun Astronomy.
year (def. 4c).

Origin:
1675–85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Sidereal year is always a great word to know.
So is Libra. Does it mean:
a zodiacal constellation between Virgo and Serpens also called the Balance
the small circle of the celestial sphere whose plane is tangent to the earth at the position of the observer
Collins
World English Dictionary
sidereal year
 
n
See year

Collins English Dictionary - Complete & Unabridged 10th Edition
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