equinox
(e-qui-nox)
3 syllables
Definition
noun. the time or date (twice each year) at which the sun crosses the celestial equator when day and night are of approximately equal length (about September 22 and March 20)
Example Sentence
The autumnal equinox marks the beginning of autumn.
Synonyms
equal day and night; vernal equinox; equinoctial
Antonyms
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equinox
Rhymes
- equinox