| NGL | neutral glycolipid |
|---|---|
| NL | neural lobe; neutral lipid; nodular lymphoma; normal; normal libido, normal limits |
| NPH | neutral protamine Hagedorn (insulin) [not used anymore]; normal pressure hydrocephalus; nucleus pulp... |
| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
| NRU | neutral red uptake |