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precession of the equinoxes |
Also found in: Encyclopedia, Wikipedia, Hutchinson | 0.02 sec. |
precession of the equinoxes n
(Astronomy) the slightly earlier occurrence of the equinoxes each year due to the slow continuous westward shift of the equinoctial points along the ecliptic by 50 seconds of arc per year. It is caused by the precession of the earth's axis around the ecliptic pole, with a period of 25 800 years ThesaurusLegend: Synonyms Related Words Antonyms
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