\Syz"y*gy\ (s[i^]z"[i^]*j[y^]), n.
The intimately united and apparently fused condition of
certain low organisms during conjugation.

\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.
2. (Gr. & L. Pros.) The coupling together of different feet;
   as, in Greek verse, an iambic syzygy.
3. (Zo["o]l.)
   (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.
{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.