| osteon | A central canal containing blood capillaries and the concentric osseous lamellae around it occurring in compact bone. Synonym: haversian system. Origin: G. Osteon, bone (05 Mar 2000) |
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| osteoncus | An osteoma, sometimes used with reference to any neoplasm of a bone. Origin: osteo-+ G. Onkos, bulk (swelling) (05 Mar 2000) |
| osteonecrosis | Condition resulting from poor blood supply to an area of bone causing bone death. For more information on this condition, please see the medicinenet site on osteonecrosis. (12 Dec 1998) |
| osteonectin | <protein> Calcium binding protein of bone, containing the EF hand motif. Binds to both collagen and hydroxyapatite. (18 Nov 1997) |