| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| PDR | Proliferative Diabetic Retinopathy; 증식성 당뇨 망막증 |
| PDR | pediatric radiology; peripheral diabetic retinopathy; Physicians' Desk Reference; postdelivery room;... |
| PdR | pediatric radiology |
| pdr | powder |