| OMVC | open mitral valve commissurotomy |
|---|---|
| MC | mass casualties; mast cell; Master of Surgery [Lat. Magister Chirurgiae]; maximum concentration; Med... |
| OLB | olfactory bulb; open liver biopsy; open lung biopsy |
| OHS | Open Heart Surgery |
| OR | 1) Operating Room; 수술실 2) Open Reduction |