| PED | patient examined by doctor; pediatric emergency department; pink-eyed dilution |
|---|---|
| PRD | partial reaction of degeneration; physician relations department; postradiation dysplasia |
| RD | radial deviation; radiology department; rate difference; Raynaud disease; reaction of degeneration; ... |
| SHHD | Scottish Home and Health Department |
| USDA | United States Department of Agriculture |