英英辞典 - English Dictionary | CUERBO - クエルボ英語辞書

equinox

noun

  1. either of the two celestial points at which the celestial equator intersects the ecliptic

    天の赤道が黄道と交差する2つの天の点のどちらか

  2. 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

    太陽が地球の赤道面を横切る1年に2回あるときのうちのいずれかで、昼と夜の長さが等しい

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