/ˈi:kwɪnɒks;ˈek-||; ˈikwəˌnɑks/noun [C] one of the two times in the year (around 20 March and 22 September) when the sun is above the imagined line round the centre of the earth(equator)and day and night are of equal length 二分时刻，二分点（3月20日及9月22日左右，太阳位于赤道上空，昼夜时间相等，是为春分或秋分）: the spring/autumn equinox 春分；秋分 ☞Look at solstice. 参看 solstice。 ☞picture at season 见 season 插图