diaphysis
/daɪˈæfəsɪs/
noun
- The shaft or central part of a long bone, between the ends (epiphyses).
- The doctor pointed to the diaphysis on the X-ray to show where the break occurred.
- The diaphysis of the femur is the longest and strongest part of the thigh bone.
- During growth, the diaphysis lengthens as new bone forms at the growth plates.