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Definition of Autumnal equinox
1. Noun. September 22.
Exact synonyms: Fall Equinox, September Equinox
Group relationships: Sep, Sept, September, Autumn, Fall
Generic synonyms: Equinox
Antonyms: Vernal Equinox
Group relationships: Sep, Sept, September, Autumn, Fall
Generic synonyms: Equinox
Antonyms: Vernal Equinox
2. Noun. (astronomy) the equinoctial point that lies in the constellation of Virgo.
Lexicographical Neighbors of Autumnal Equinox
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