English dictionary
equinox
/'/i/kw/@/,n/A/ks/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length
Source: WordNet 3.0
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(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic
Synonyms equinoctial pointSource: WordNet 3.0
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The time when the sun enters one of the equinoctial points, that is, about March 21 and September 22. See <i>Autumnal equinox</i>, <i>Vernal equinox</i>, under <u>Autumnal</u> and <u>Vernal</u>.
Source: webster1913