| Abbreviation | Definition |
|---|---|
| NMA | National Medical Association |
| NMDP | National Marrow Donor Program |
| NME | New Molecular Entity |
| NMFS | National Marine Fisheries Service |
| NMI | Non-Medicinal Ingredient |
| NMPF | National Milk Producers Federation |
| NMQAAC | National Mammography Quality Assurance Advisory Committee |
| NMR | Nuclear Magnetic Resonance |
| NMT | Not More Than .... |
| NNC | National Notification Center |
| NNMC | National Naval Medical Center |
| NOA | Notice Of Availability |
| NOAA | National Oceanographic and Atmospheric Administration |
| NOAE | no observed adverse effect |
| NOAEL | No Observable Adverse Effect Level |
| NOC | National Operations Center |
| NOC | Notice Of Compliance |
| NOD | Notice Of Deficiency |
| NOEL | no observed effect level |
| NOH | Notice Of Hearing |