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equinox
nounmasculinetechnicaluncommon/ekwiˈnɔsju/e·qui·nó·cio
Definition
1The time or date (twice each year) when the sun crosses the celestial equator, making day and night of approximately equal length all over the earth.
Usage examples
“The March equinox is also known as the vernal equinox in the Northern Hemisphere.”
“Many cultures celebrate festivals around the time of the equinox.”
Antonyms
Common combinations
spring equinoxautumn equinoxdate of the equinox