zygosphene


From The Collaborative International Dictionary of English v.0.48:

Zygosphene \Zyg"o*sphene\, n. [Gr. zygo`n a yoke + ? a wedge.]
   (Anat.)
   A median process on the front part of the neural arch of the
   vertebrae of most snakes and some lizards, which fits into a
   fossa, called the zygantrum, on the back part of the arch in
   front.
   [1913 Webster]
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