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diaphysis Syllabification: di·aph·y·sis
Pronunciation: /dīˈafəsəs/

Definition of diaphysis in English:

noun (plural diaphyses-ˌsēz)

The shaft or central part of a long bone. Compare with epiphysis.
Example sentences
  • Interposed between the epiphysis and the diaphysis is the cartilaginous epiphyseal plate.
  • The tumor is eccentric, usually metaphyseal, but it may extend into the epiphysis or along the medullary cavity into the diaphysis.
  • The forces of the two opposing groups of muscles result in twisting of the epiphysis and the diaphysis in opposite directions.


Mid 19th century: from Greek diaphusis 'growing through', from dia 'through' + phusis 'growth'.

Definition of diaphysis in:
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