The Collaborative International Dictionary
Diapophysis
Diapophysis \Di`a*poph"y*sis\, n. [NL. See Dia-, and Apophysis.] (Anat.) The dorsal transverse, or tubercular, process of a vertebra. See Vertebra.
Wiktionary
diapophysis
n. (context anatomy English) The dorsal transverse process of a vertebra