- 1The third season of the year, when crops and fruits are gathered and leaves fall, in the northern hemisphere from September to November and in the southern hemisphere from March to May: the countryside is ablaze with color in autumn [as modifier]: autumn leaves • figurative he was in the autumn of his lifeMore example sentences
- All trials were conducted in the autumn of 1996, and summers and autumns of 1997 and 1998, during the dry season characteristic of the region.
- Come autumn, the leaf colour warms up, becoming singed with red, a real treat to witness.
- He said it was given to her in the autumn of 1997, with a copy kept for the company's files.
- 1.1 Astronomy The period from the autumnal equinox to the winter solstice.More example sentences
- At the autumnal equinox, the sun appears to cross the celestial equator, from north to south; this marks the beginning of autumn in the Northern Hemisphere.
- The autumnal equinox is the day when Autumn begins and night and day are nearly the same length.
- The Autumn Equinox marks the arrival of autumn, which will sneaking up to us this Thursday!
late Middle English: from Old French autompne, or later directly from Latin autumnus.