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equinoctial n. 春分或秋分时的暴风雨
a. 春分或秋分的 春分或秋分时的暴风雨春分或秋分的 equinoctial adj 1: relating to the vicinity of the equator 2: relating to an equinox ( when the lengths of night and day are equal) n 1: the great circle on the celestial sphere midway between the celestial poles [ synonym: { celestial equator}, { equinoctial circle}, { equinoctial line}, { equinoctial}] Equator \ E* qua" tor\, n. [ L. aequator one who equalizes: cf. F. [' e] quateur equator. See { Equate}.] 1. ( Geog.) The imaginary great circle on the earth' s surface, everywhere equally distant from the two poles, and dividing the earth' s surface into two hemispheres. [ 1913 Webster] 2. ( Astron.) The great circle of the celestial sphere, coincident with the plane of the earth' s equator; -- so called because when the sun is in it, the days and nights are of equal length; hence called also the { equinoctial}, and on maps, globes, etc., the { equinoctial line}. [ 1913 Webster] { Equator of the sun} or { Equator of a planet} ( Astron.), the great circle whose plane passes through through the center of the body, and is perpendicular to its axis of revolution. { Magnetic equator}. See { Aclinic}. [ 1913 Webster]
Equinoctial \ E` qui* noc" tial\, a. [ L. aequinoctials, fr. aequinoctium equinox: cf. F. [' e] quinoxial. See { Equinox}.] 1. Pertaining to an equinox, or the equinoxes, or to the time of equal day and night; as, the equinoctial line. [ 1913 Webster] 2. Pertaining to the regions or climate of the equinoctial line or equator; in or near that line; as, equinoctial heat; an equinoctial sun. [ 1913 Webster] 3. Pertaining to the time when the sun enters the equinoctial points; as, an equinoctial gale or storm, that is, one happening at or near the time of the equinox, in any part of the world. [ 1913 Webster] { Equinoctial colure} ( Astron.), the meridian passing through the equinoctial points. { Equinoctial line} ( Astron.), the celestial equator; -- so called because when the sun is on it, the nights and days are of equal length in all parts of the world. See { Equator}. [ 1913 Webster] Thrice the equinoctial line He circled. -- Milton. { Equinoctial points} ( Astron.), the two points where the celestial and ecliptic intersect each other; the one being in the first point of Aries, the other in the first point of Libra. { Equinoctial time} ( Astron.) reckoned in any year from the instant when the mean sun is at the mean vernal equinoctial point. [ 1913 Webster]
Equinoctial \ E` qui* noc" tial\, n. The equinoctial line. [ 1913 Webster]
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