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

Colder weather in autumn hasn't been that unusual in our past climate but in an increasingly warmer climate, snow and ice in early November is and will become more unusual.

From BBC

A significant proportion of Steve Tandy's Wales side already ply their club trade in England with 13 non-home-based players involved in the autumn squad.

From BBC

The fourth regular series follows the hugely successful celebrity spin-off, which aired in the autumn and attracted 15 million viewers.

From BBC

Don’t forget Canada’s zombie wildfires, the Texas floods, the late autumn Southwest heat waves, the calving Doomsday glacier and on and on.

From Salon

Northern Europe was largely spared the heatwave that hit Europe at the end of June but it instead experienced an abnormally warm autumn.

From Barron's