Orbital
In anatomy, pertaining to the orbit, the bony cavity that contains the eyeball.
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- Orbital fracture
the frontal, ethmoidal, lacrimal, and sphenoid bones and the maxilla and zygoma. A break in the orbit portion of one or more of these six bones is an orbital fracture.
- Orbital ridge
The bony ridge beneath the eyebrow.
- Orchiopexy
Surgery to bring an undescended testicle down into the scrotum.
- Orchitis
Inflammation of the testis. Causes of orchitis include mumps and other infections; diseases, such as polyarteritis nodosa; and injury.
- Ordre des Medecins
The Conseil National de l’Ordre des Médecins. The French equivalent of the American Medical Association (the AMA).