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Definition of equinox noun from the Oxford Advanced Learner's Dictionary

equinox

noun
 
/ˈekwɪnɒks/,
 
/ˈiːkwɪnɒks/
 
/ˈekwɪnɑːks/,
 
/ˈiːkwɪnɑːks/
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  1. one of the two times in the year (around 20 March and 22 September) when the sun is above the equator and day and night are of equal length
    • the spring/autumn equinox
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    Oxford Collocations DictionaryEquinox is used after these nouns:
    • autumn
    • fall
    • spring
    • …
    See full entry
    Word Originlate Middle English: from Old French equinoxe or Latin aequinoctium, from aequi- ‘equal’ + nox, noct- ‘night’.
See equinox in the Oxford Advanced American Dictionary
Check pronunciation: equinox

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