Definition of autumnal equinox in English:

autumnal equinox

Syllabification: au·tum·nal e·qui·nox

noun

The equinox in autumn, on about September 22 in the northern hemisphere and March 20 in the southern hemisphere.
More example sentences
  • Sunlight is continuous throughout the summer, but after the solstice the sun slowly sinks to the horizon until it drops below on the autumn equinox.
  • The autumn equinox was 22nd September but I'll be celebrating it with friends and family today.
  • Make a portrait of the north woods in upper Minnesota over the ninety days between the autumn equinox and winter solstice.

Definition of autumnal equinox in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day glee
Pronunciation: glē
noun
great delight