| OLB | olfactory bulb; open liver biopsy; open lung biopsy |
|---|---|
| olf | olfactory |
| OLFR | olfactory receptor |
| OP | occipitoparietal; occipitoposterior; occiput posterior; octapeptide; olfactory peduncle; opening pre... |
| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |