1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Zygapophysis  \Zyg`a*poph"y*sis\,  n.;  pl  {Zygapophyses}.  [Gr.  ? 
  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. 

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