Definition of diaphysis

< diaphragm

diapir >

di·aph·y·sis    (d-f-ss) KEY 

NOUN:
Anatomy pl. di·aph·y·ses  (-sz) KEY 

The shaft of a long bone.

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ETYMOLOGY:
Greek diaphusis, spinous process of the tibia, from diaphuesthai, to grow between : dia-, dia- + phuesthai, to grow, middle voice of phuein; see bheu- in Indo-European roots

OTHER FORMS:
dia·physi·al  (d-fz-l) KEY  or di·aphy·seal  (d-f-sl, d-fz-l) KEY (Adjective)