01 n. 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.
pl.
Syzygies ((-jĭz))
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1.
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.(Astron.)
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2.
The coupling together of different feet; as, in Greek verse, an iambic syzygy.(Gr. & L. Pros.)
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3.
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.(Zool.)
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4.
The intimately united and apparently fused condition of certain low organisms during conjugation.
Phrases & compounds
Line of syzygies —
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.