diapophysisn.
/dʌɪəˈpɒfɪsɪs/ Anatomy.
A term applied by Owen to a pair of exogenous segments of the typical vertebra, forming lateral processes of the neural arch. In the cervical vertebræ of man and other mammals it is represented by the posterior part of the ring enclosing the vertebral artery; in the dorsal vertebræ by the transverse process; in the lumbar and sacral vertebræ by short processes of the centrum ( New Sydenham Soc. Lexicon).
ΚΠ
1854 R. Owen Struct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 168 The neural arch..also sometimes includes a pair of bones, called ‘diapophyses’.
1872 St. G. Mivart Lessons Elem. Anat. (1873) vi. 220 We may thus distinguish two series of paraxial parts on each side, one made up of tubercular processes (or diapophyses) and ribs, and the other made up of capitular processes (or parapophyses) and ribs.
Derivatives
diapoˈphysial adj. of or belonging to a diapophysis.
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1854 R. Owen Struct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 206 The bones..manifest more of their diapophysial character than their homotypes do in the occipital segment.
This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2018).
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