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syzygy n. 会合,朔望 会合,朔望 syzygy n 1: the straight line configuration of 3 celestial bodies ( as the sun and earth and moon) in a gravitational systemSyzygy \ Syz" y* gy\ ( s[ i^] z"[ i^]* j[ y^]), n.; pl. { Syzygies} (- j[ i^] z). [ L. syzygia a joining together, conjunction, Gr. syzygi` a; sy` n with zeygny` nai to join, zygo` n yoke: cf. F. syzygie. See { Yoke}, n.] 1. ( Astron.) The point of an orbit, as of the moon or a planet, at which it is in conjunction or opposition; -- commonly used in the plural. [ 1913 Webster] 2. ( Gr. & L. Pros.) The coupling together of different feet; as, in Greek verse, an iambic syzygy. [ 1913 Webster] 3. ( Zool.) ( a) Any one of the segments of an arm of a crinoid composed of two joints so closely united that the line of union is obliterated on the outer, though visible on the inner, side. ( b) The immovable union of two joints of a crinoidal arm. [ 1913 Webster] 4. The intimately united and apparently fused condition of certain low organisms during conjugation. { Line of syzygies} ( Astron.), the straight line connecting the earth, the sun, and the moon or a planet, when the latter is in conjunction or opposition; -- used chiefly of the moon. [ 1913 Webster]
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