 autumnal_equinox |
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| 1. | [ noun ] September 22 | |
| Synonyms: | fall_equinox September_equinox | |
| Related terms: | vernal_equinox equinox September fall | |
| 2. | [ noun ] (astronomy) the equinoctial point that lies in the constellation of Virgo | |
| Related terms: | equinoctial_point astronomy | |
