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equinox 音标拼音: ['ikwən,ɑks] n. 昼夜平分点,春分或秋分 昼夜平分点,春分或秋分 equinox n 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 [synonym: {equinoctial point}, {equinox}] Equinox \E"qui*nox\, n. [OE. equinoxium, equenoxium, L. aequinoctium; aequus equal nox, noctis, night: cf. F. ['e]quinoxe. See {Equal}, and {Night}.] 1. The time when the sun enters one of the equinoctial points, that is, about March 21 and September 22. See {Autumnal equinox}, {Vernal equinox}, under {Autumnal} and {Vernal}. [1913 Webster] When descends on the Atlantic The gigantic Stormwind of the equinox. --Longfellow. [1913 Webster] 2. Equinoctial wind or storm. [R.] --Dryden. [1913 Webster] 34 Moby Thesaurus words for "equinox":
aphelion, apogee, astronomical longitude, autumnal equinox, celestial equator, celestial longitude, celestial meridian, circle, colures, ecliptic, equator, equinoctial, equinoctial circle, equinoctial colure, galactic longitude, geocentric longitude, geodetic longitude, great circle, heliocentric longitude, longitude, meridian, orbit, perigee, perihelion, period, small circle, solstice, solstitial colure, summer solstice, trajectory, vernal equinox, winter solstice, zodiac, zone
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