| PPN | partial parenteral nutrition; pedunculopontine nucleus |
|---|---|
| SPN | senior plan network; sialophorin; solitary pulmonary nodule; supplemental parental nutrition; sympat... |
| TEN | total enteral nutrition; total excretory nitrogen; toxic epidermal necrolysis; transepidermal neuros... |
| TPN | thalamic projection neuron; total parenteral nutrition; transition protein; triphosphopyridine nucle... |
| TPPN | total peripheral parenteral nutrition |