The Collaborative International Dictionary of English v.0.48:

Hemapophysis \Hem`a*poph"y*sis\, n.; pl. Hemapophyses . [NL.
   See H[ae]ma-, and Apophysis.] (Anat.)
   The second element in each half of a hemal arch,
   corresponding to the sternal part of a rib. --Owen. --
   Hem`a*po*phys"i*al, a. Hemastatic