| PPCD | polymorphous posterior corneal dystropy |
|---|---|
| PPCE | postproline cleaving enzyme |
| PPCF | peripartum cardiac failure; plasma prothrombin conversion factor |
| PPCM | postpartum cardiomyopathy |
| PPCRA | pigmented paravenous chorioretinal atrophy |
| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability; phenyldiphenyloxadiazole; postpartum day; primary physical dependence; progressive perceptive deafness; purified protein derivative; Siebert purified protein derivative of tuberculin |
| PPD-S | purified protein derivative-standard |
| PPDA | Para-phenylene Di-Amine |
| PPDR | Pre-Proliferative Diabetic Retinopathy |
| PPDs | (Tuberculin) Purified Protein Derivatives |