(noun, adjective)


1. relating to the vicinity of the equator

2. relating to an equinox (when the lengths of night and day are equal)

Sentences with equinoctial as an adjective:

- an equinoctial gale or storm, i.e. one happening at or near the time of the equinox, in any part of the world


1. the great circle on the celestial sphere midway between the celestial poles

Definition categories: location