| NPV | negative predictive value; pressure value; negative pressure ventilation; net present value; nuclear... |
|---|---|
| NRA | nitrate reductase; nucleus retroambigualis |
| NRGC | nucleus reticularis gigantocellularis |
| NRL | nucleus reticularis lateralis |
| NRM | National Registry of Microbiologists; normal range of motion; nucleus reticularis magnocellularis |