| RD | radial deviation; radiology department; rate difference; Raynaud disease; reaction of degeneration; ... |
|---|---|
| RDI | recommended daily intake; respiratory disturbance index; rupture-delivery interval |
| RDQ | respiratory disease questionnaire |
| RDS | Raskin Depression Scale; respiratory distress syndrome; reticuloendothelial depressing substance; rh... |
| RE | respiratory exchange ratio |