ETYM Latin auctumnus, autumnus, perh. from a root av to satisfy one's self: cf. French automne. Related to Avarice.
1. The third season of the year, or the season between summer and winter, starting in the northern temperate zone at the autumnal equinox, about September 23, and ends at the winter solstice, about December 23.
2. In popular language, autumn, in America, comprises September, October, and November.
3. The time of maturity or decline; latter portion; third stage.
4. The harvest or fruits of autumn.

1. A movement downward
2. A sudden decline in strength or number or importance; SYN. downfall.
3. A lapse into sin; a loss of innocence or of chastity
4. The season when the leaves fall from the trees; SYN. autumn.
5. (Sports) When a wrestler's shoulders are forced to the mat; SYN. pin.

Occurring in or appropriate to the season of autumn.

ETYM Latin auctumnalis, autumnalis: cf. French automnal.
1. Characteristic of late maturity verging on decline.
2. Of or characteristic of or occurring in autumn.

1. September 22; SYN. September equinox, fall equinox.
2. (Astronomy) The equinoctial point that lies in the constellation of Virgo.

Occurring in or appropriate to the season of autumn.

ETYM Latin auctumnalis, autumnalis: cf. French automnal.
1. Characteristic of late maturity verging on decline.
2. Of or characteristic of or occurring in autumn.