equinoctial

Pronunciation: /ˌɛk.wɪˈnɒk.ʃəl/

The English word “equinoctial” has 7 meanings listed here.

adjective

Of or relating to the spring or autumnal equinox.
Of or relating to the celestial equator.
Equatorial: of or relating to the equator of the Earth.
Of flowers: that open and close at particular times of day.

noun

The great circle midway between the celestial poles; the celestial equator.
The terrestrial equator.
An equinoctial gale.

Etymology

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

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.