Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “vernal equinox”

vernal equinox

noun [C usually singular]    
the time in the spring when the sun crosses the equator, and when night and day are of equal lengthAstronomy - general words
(Definition of vernal equinox noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of vernal equinox

Translations of “vernal equinox”

Word of the Day


willing to give money, help, kindness, etc., especially more than is usual or expected

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More