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Definition of Equinoctial

Equinoctial

  1. Pertaining to an equinox, or the equinoxes, or to the time of equal day and night; as, the equinoctial line.
  2. Pertaining to the regions or climate of the equinoctial line or equator; in or near that line; as, equinoctial heat; an equinoctial sun.
  3. 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. The equinoctial line.