equinox

名词 equinox:

1. either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length
2. (astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic
   同义词：equinoctial point

e.qui.nox

n.（名词）
Either of two points on the celestial sphere at which the ecliptic intersects the celestial equator.
二分点：在天球上天赤道与黄道相切的两点中的任一点
Either of the two times during a year when the sun crosses the celestial equator and when the length of day and night are approximately equal; the vernal equinox or the autumnal equinox.
二分时刻：一天中太阳通过天赤道的两个时刻中的任一时刻，此时昼夜长短几乎相等；春分或秋分

来源：
Middle English
中古英语
from Old French equinoxe
源自 古法语 equinoxe
from Medieval Latin aequinoxium
源自 中世纪拉丁语 aequinoxium
from Latin aequinoctium
源自 拉丁语 aequinoctium
aequi- [equi-]
aequi- [表示.相等.的构词成分]
nox noct- [night] * see nek w-t-
nox noct- [夜] *参见 nek w-t-