Autumn Definition

ôtəm

noun

The season of the year between summer and winter, during which the weather becomes cooler and many plants become dormant, extending in the Northern Hemisphere from the autumnal equinox to the winter solstice and popularly considered to include the months of September, October, and November; fall. In the Southern Hemisphere autumn includes March, April, and May.

American Heritage

The season that comes between summer and winter; fall: in the astronomical year, that period between the autumnal equinox and the winter solstice.

Webster's New World

A period of maturity verging on decline.

American Heritage

Any period of maturity or of beginning decline.

Webster's New World

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.

Wiktionary

Synonyms:

Antonyms:

Antonyms:
spring

adjective

Relating to or occurring in autumn.

Autumn foliage; autumn harvests.

American Heritage

Of, in, for, or characteristic of fall.

Webster's New World

Grown during the season of autumn.

Autumn crops.

American Heritage

Of or relating to autumn.

Autumn leaves.

Wiktionary

pronoun

A female given name of modern usage, from the name of the season.

Wiktionary

Other Word Forms of Autumn

Noun

Singular:

autumn

Plural:

autumns

Origin of Autumn

Middle English autumpne from Old French autompne from Latin autumnus

From American Heritage Dictionary of the English Language, 5th Edition
From Old French automne, from Latin autumnus.

From Wiktionary