| PRD | partial reaction of degeneration; physician relations department; postradiation dysplasia |
|---|---|
| PRP | physiologic rest position; pityriasis rubra pilaris; platelet-rich plasma; polyribosyl ribitol phosp... |
| QP | quanti-Pirquet [reaction] |
| QRZ | wheal reaction time [Ger. Qaddel Reaktion Zeit] |
| RC | an electronic circuit containing a resistor and capacitor in series; radiocarpal; reaction center; r... |