| NAS | N-Acetylserotonin |
|---|---|
| NAS | Neonatal Abstinence Syndrome |
| NAS | nucleus accumben septi |
| NAS | nucleus accumbens |
| NASA | Aeronautic and Space Administration |
| nasal CPAP | Nasal continuous positive airway pressure |
| NASBA | Nucleic Acid Sequence Based Amplification |
| NASCET | North American Symptomatic Carotid Endarteectomy Trial |
| Nase | Neuraminidase |
| Nase | nuclease |