Zygapophysis

Zyg′a‐poph″y‐sis (?), n.; pl.Zygapophyses (#). [Gr. ζυγόν a yoke + E. apophysis.] (Anat.) One of the articular processes of a vertebra, of which there are usually four, two anterior and two posterior. See under Vertebra. — Zyg′ap‐o‐phys″i‐al (#), a.