| PNN | Probabilistic Neural Network |
|---|---|
| PNP | 4-nitrophenol |
| PNP | Para-nitrophenol |
| PNP | Paraneoplastic pemphigus |
| PNP | pediatric nurse practitioner |
| PNP | Posterior neuropore |
| PNP | Purine nucleoside phosphorylase |
| PNP | polyneuropathy |
| PNPA | p-nitrophenol acetate |
| PNPase | Polynucleotide phosphorylase |