autumnal equinox
noun
1 autumnal equinox
September 22.
synonyms: fall equinox, September equinox.
Roget 126: evening, eve; decline of day, fall of day, close of day; candlelight, candlelighting†; eventide, nightfall, curfew, dusk, twilight, eleventh hour; sunset, ... show more
Dutch: herfstnachtevening
2 autumnal equinox
astronomy The equinoctial point that lies in the constellation of Virgo.
debug info: 0.0316