zygosphene Meaning, Definition & Usage

Zyg"o*sphene noun
Etymology
Gr. a yoke + a wedge.
Definitions
  1. (Anat.) A median process on the front part of the neural arch of the vertebræ of most snakes and some lizards, which fits into a fossa, called the zygantrum, on the back part of the arch in front.

Webster 1913