| NDF | neutrophil diffraction factor; new dosage form |
|---|---|
| PAF | paroxysmal atrial fibrillation; peroxisomal assembly factor; phosphodiesterase-activating factor; pl... |
| PDGS | partial form of DiGeorge syndrome |
| PDHa | pyruvate dehydrogenase in active form |
| PEF | peak expiratory flow; Psychiatric Evaluation Form; pulmonary edema fluid |