| Abbreviation | Definition |
|---|---|
| MUFV | Maximum Uniform Flow Volume |
| MUFZ | Main Urals Fault Zone |
| MVAC | Mississippi Valley Archaeology Center |
| MVO | Montserrat Volcano Observatory |
| MVP | Magmatic Volatile Phase |
| MVT | Mississippi Valley Type deposit |
| MWD | Measurement While Drilling |
| MWD | Measurements While Drilling |
| MWV | Mount Washington Valley |
| NA | Natural Amber |
| NA | North American |
| NAC | Natural Area Coding |
| NAD | North American Datum |
| NADAG | North American Database of Archaeological Geophysics |
| NADM | North American Data Model |
| NAM | North American Mesoscale |
| NARS | Network Of Autonomously Recording Seismographs |
| NAS | Non-Access Stratum |
| NBAR | Nadir BRDF Adjusted Reflectance |
| NCMR | North Coast and Mountain Region |