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Platonic year

American  

noun

Astronomy.
  1. a period of about 26,000 years, equal to the time required for a complete revolution of the equinoxes.


Etymology

Origin of Platonic year

First recorded in 1630–40

Example Sentences

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See Examples For:

Oh for the revolution of the great Platonic year, that those times might come over again!

From Table Talk Essays on Men and Manners by Hazlitt, William

There is a figure of the great Platonic year with a phenix on his hand on the reverse of a medal of Adrian.

From The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation by Darwin, Erasmus

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