| OLB | olfactory bulb; open liver biopsy; open lung biopsy |
|---|---|
| LES | Lambert-Eaton syndrome; Lawrence Experimental Station [agar]; local excitatory state; Locke egg seru... |
| OHS | Open Heart Surgery |
| OR | 1) Operating Room; 수술실 2) Open Reduction |
| O/R | Open Reduction |