 equinoctial |
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| 1. | [ adjective ] relating to an equinox (when the lengths or night and day are equal) | |
| Related terms: | equinox | |
| 2. | [ adjective ] relating to the vicinity of the equator | |
| Related terms: | equator | |
| 3. | [ noun ] (geography) the great circle on the celestial sphere midway between the celestial poles | |
| Synonyms: | equinoctial_circle equinoctial_line celestial_equator | |
| Related terms: | great_circle right_ascension | |
