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Noun: vernal equinox  'vur-n(u)l 'ee-kwu,nóks
  1. (astronomy) the equinoctial point that lies in the constellation of Pisces
    "The vernal equinox marks the beginning of spring in the Northern Hemisphere"
     
  2. The spring equinox in the Northern Hemisphere, occurring around March 20 or 21, when day and night are of equal length
    "The vernal equinox marks the beginning of spring";
    - March equinox, spring equinox

Derived forms: vernal equinoxes

Type of: equinoctial point, equinox

Part of: Mar, March, spring, springtime

Encyclopedia: Vernal equinox