equinox
[ ee-kwuh-noks ]
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Part of Speech noun
Origin + Etymology
Late Middle English; Latin from Old French equinoxe or Latin aequinoctium, from aequi- ‘equal’ + nox, noct- ‘night’
Synonyms
  • vernal equinox
  • celestial point
  • autumnal equinox
  • equinoctial point
Antonyms
  • antapex
  • nadir
  • apex
Definition
the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of approximately equal length
Example
The equinox has historically been a time of celebration of the arrival of spring or fall.
Usage Over Time

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