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1. (adj.) equinoctial
pertaining to an equinox or the equinoxes, or to the equality of day and night.
2. equinoctial
pertaining to the celestial equator.
3. equinoctial
occurring at or about the time of an equinox.
4. (n.) equinoctial
a violent rainstorm occurring at about the time of an equinox.
Etymology: (1350–1400; ME < L)
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| Definition of 'equinoctial' |
Princeton's WordNet |
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1. (adj) celestial equator, equinoctial circle, equinoctial line, equinoctial
the great circle on the celestial sphere midway between the celestial poles
2. (adj) equinoctial
relating to the vicinity of the equator
3. (adj) equinoctial
relating to an equinox (when the lengths of night and day are equal)
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| Definition of 'equinoctial' |
Webster Dictionary |
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1. (adj) equinoctial
pertaining to an equinox, or the equinoxes, or to the time of equal day and night; as, the equinoctial line
2. (adj) equinoctial
pertaining to the regions or climate of the equinoctial line or equator; in or near that line; as, equinoctial heat; an equinoctial sun
3. (adj) equinoctial
pertaining to the time when the sun enters the equinoctial points; as, an equinoctial gale or storm, that is, one happening at or near the time of the equinox, in any part of the world
4. (noun) equinoctial
the equinoctial line
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Definitions of equinoctial 
