equinoctial

Definition

Of or relating to the spring or autumnal equinox.

Etymology

Inherited from Middle English equinoctial, equinoccial, equinoxial, from Old French equinoxial, from Latin (circulus) aequinoctiālis, from aequinoctium + -alis.

Example Sentences

• "an equinoctial gale or storm, i.e. one happening at or near the time of the equinox, in any part of the world"
• "In the Assyrian Standard [...] we see the figure of an Archer above that of a galloping Bull, and in another Assyrian Standard, that of Sargon II., we find not only the Archer and the Bull, the two constellations which 4,000 b.c. marked the equinoctial colure, but we may also clearly trace a reference to the two constellations which at the same date marked the solstitial colure, namely, those of the Lion and the Water-man."