Platonic year

Platonic year

noun Astronomy.
a period of about 26,000 years, equal to the time required for a complete revolution of the equinoxes.
Also called great year.


Origin:
1630–40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Platonic year is always a great word to know.
So is Sagittarius. Does it mean:
determined by or pertaining to the stars
a zodiacal constellation between Scorpius and Capricorn also called the Archer
WordNet
platonic year

noun
time required for one complete cycle of the precession of the equinoxes, about 25,800 years [syn: great year
WordNet® 3.0, © 2006 by Princeton University.
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