equinoctial

The points were directed eastward, the two outside showing the two solstitial points, and that in the centre the equinoctial.
Ancient America, in Notes on American Archaeology|John D. Baldwin
I feel as fit as a fiddle, and believe the equinoctial gales at their worst would be none too much for me.
The Incomparable 29th and the "River Clyde"|George Davidson
About the hour of equinoctial sunset comes a periodic respite in the shape of dinner.
The Posthumous Works of Thomas De Quincey, Vol. II (2 vols)|Thomas De Quincey
He that travels by sea or land, towards the equinoctial, gradually acquires motion; from it, loses.
The Complete Works in Philosophy, Politics and Morals of the late Dr. Benjamin Franklin, [Vol 2 of 3]|Benjamin Franklin

Sri Yukteswar discovered the mathematical application of a 24,000-year equinoctial cycle to our present age.
Autobiography of a YOGI|Paramhansa Yogananda

British Dictionary definitions for equinoctial

equinoctial

/ (ˌiːkwɪˈnɒkʃəl) /

adjective

relating to or occurring at either or both equinoxes

(of a plant) having flowers that open and close at specific regular times

astronomy of or relating to the celestial equator

noun

a storm or gale at or near an equinox

another name for celestial equator

Word Origin for equinoctial

C14: from Latin aequinoctiālis concerning the equinox

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for equinoctial

equinoctial

[ ē′kwə-nŏk′shəl, ĕk′wə- ]

Adjective

Relating to an equinox.

Relating to the celestial equator.

Noun

See celestial equator.