equinoctial
adjective /ˌiːkwɪˈnɒkʃl/, /ˌekwɪˈnɒkʃl/
/ˌiːkwɪˈnɑːkʃl/, /ˌekwɪˈnɑːkʃl/
- connected with an equinox
二分点的；昼夜平分时的；春分（或秋分）的 词源late Middle English (in the sense ‘relating to equal periods of day and night’): via Old French from Latin aequinoctialis, from aequinoctium, from aequi- ‘equal’ + nox, noct- ‘night’.