| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
|---|---|
| NRS | neurobehavioral rating scale; normal rabbit serum; normal reference serum; numerical rating scale |
| NSD | Nairobi sheep disease; neonatal staphylococcal disease; neurosecretory dysfunction; night sleep depr... |
| NSS | normal saline solution; normal size and shape; not statistically significant; nutrition support serv... |
| NT | nasotracheal; neotetrazolium; neurotensin; neurotrophic; neutralization test; nicotine tartrate; non... |