autumn

American  

[aw-tuhm] / ˈɔ təm /

noun

1. the season between summer and winter; fall. In the Northern Hemisphere it is from the September equinox to the December solstice; in the Southern Hemisphere it is from the March equinox to the June solstice.

2. a time of full maturity, especially the late stages of full maturity or, sometimes, the early stages of decline.

   to be in the autumn of one's life.

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autumn British  

/ ˈɔːtəm /

noun

1. (sometimes capital)

   1. Also called (esp US): fall.  the season of the year between summer and winter, astronomically from the September equinox to the December solstice in the N hemisphere and from the March equinox to the June solstice in the S hemisphere

   2. ( as modifier )

      autumn leaves

2. a period of late maturity, esp one followed by a decline

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Etymology

Origin of autumn

1325–75; < Latin autumnus; replacing Middle English autumpne < Middle French autompne < Latin

Example Sentences

The East Wing of the White House was demolished last autumn to make way for the ballroom.

From BBC

The new unstaffed North Filton station, which sits on the southern edge of the old Filton Airport site and immediately east of the arena, is due to open in the autumn.

From BBC

The heavy rainfall we have seen during autumn and winter has been much needed because it has followed a significant drought that developed in 2025 across parts of England and eastern Scotland.

From BBC

Those assessments draw on extensive climate records, including annual measurements of autumn snow cover in the Northern Hemisphere collected by the U.S.

From Science Daily

It is independent of the government and its reports are usually released alongside big financial events such as the budget in the autumn.

From BBC