| NOS | network operating system; nitric oxide synthetase; non-organ-specific; not on staff; not otherwise s... |
|---|---|
| NPCP | National Prostatic Cancer Project; non-Pneumocystis pneumonia |
| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
| NSCLC | non-small-cell lung cancer |
| NSI | negative self-image; no signs of infection/inflammation; non-syncytium-inducing |