| PUFA | poly-unsaturated |
|---|---|
| PUFA | poly-unsaturated fat |
| PUJ | Pelviureteric junction |
| PUK | Peripheral ulcerative keratitis |
| PUN | Plasma urea N |
| PUN | Plasma urea nitrogen |
| PUO | Pyrexia of Unknown Origin |
| PUP | previously untreated patient |
| PUPPP | Pruritic urticarial papules and plaques of pregnancy |
| PUR | Polyurethane |