from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The season of the year between summer and winter, lasting from the autumnal equinox to the winter solstice and from September to December in the Northern Hemisphere; fall.
- n. A period of maturity verging on decline.
- adj. Of, having to do with, occurring in, or appropriate to the season of autumn: autumn foliage; autumn harvests.
- adj. Grown during the season of autumn: autumn crops.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Traditionally the third of the four seasons, when deciduous trees lose their leaves; typically regarded as being from September 24 to December 22 in parts of the Northern Hemisphere, and the months of March, April and May in the Southern Hemisphere.
- adj. Of or relating to autumn.
from the GNU version of the Collaborative International Dictionary of English
- n. The third season of the year, or the season between summer and winter, often called “the fall.” Astronomically, it begins in the northern temperate zone at the autumnal equinox, about September 23, and ends at the winter solstice, about December 23; but in popular language, autumn, in America, comprises September, October, and November.
- n. The harvest or fruits of autumn.
- n. The time of maturity or decline; latter portion; third stage.
from The Century Dictionary and Cyclopedia
- n. The third season of the year, or the season between summer and winter: often called fall, as being the time of the falling of the leaves.
- n. Figuratively
- n. A period of maturity, or of incipient decay, abatement, or decline: as, the autumn of life.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the season when the leaves fall from the trees
Middle English autumpne, from Old French autompne, from Latin autumnus.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French automne, from Latin autumnus. (Wiktionary)