Definition of "equinoctial" in Anglais

adjective

1. (astronomy) Of or relating to the spring or autumnal equinox.

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

2. (astronomy) Of or relating to the celestial equator.

3. (uncommon) Equatorial: Of or relating to the equator of the Earth.

noun

1. The great circle midway between the celestial poles; the celestial equator.

2. (rare) The terrestrial equator.

3. An equinoctial gale.