Definition, Meaning & Synonyms

equinox

noun
ˈɛkwɪˌnɑks
Definition
The time when the sun crosses the celestial equator, occurring twice a year, resulting in nearly equal day and night lengths.
Examples
  • During the spring equinox, many cultures celebrate the arrival of longer days.
  • The autumn equinox signals the start of harvest time in many regions.
Meaning
An equinox marks the beginning of spring or autumn, when day and night are approximately of equal length.
Synonyms
  • Equatorial event
  • Day-night equalization