adj. 1. Relating to an equinox. 2. Relating to the celestial equator. n. 1. A violent storm of wind and rain occurring at or near the time of the equinox. 2. See celestial equator. [Middle English equinoxial, from Old French, from Latin aequinoctiālis, from aequinoctium, equinox; see EQUINOX.] |
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