English dictionary

equinoctial meaning and definition

EQUINOCTIAL noun

Definition of equinoctial (noun)

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

EQUINOCTIAL adjective

Definition of equinoctial (adjective)

  1. relating to the vicinity of the equator
  2. relating to an equinox (when the lengths of night and day are equal)
Source: Princeton University Wordnet