equinox
Word family adjectiveequinoctialadverbequinoctiallynounequinox
eq·ui·nox /ˈiːkwənɒks, ˈe- $ -nɑːks/ noun [countableC] HEGone of the two times in a year when night and day are of equal length 二分时刻,昼夜平分时〔指春分或秋分〕 → solstice Origin equinox (1300-1400) French équinoxe, from Latin aequinoctium, from aequi- (EQUI-) + nox “night”