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Meaning Of Equinoctial
a.
Pertaining to an equinox, or the equinoxes, or to the
time of equal day and night; as, the equinoctial line.
a.
Pertaining to the regions or climate of the
equinoctial line or equator; in or near that line; as, equinoctial
heat; an equinoctial sun.
a.
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.