| Abbreviation | Definition |
|---|---|
| MLD | Mild |
| MLJ | Mid- Level Jet |
| MM | Meteorological Measuring System |
| MME | Mobile Meteorological Equipment |
| MMHg | Millimeters of Mercury |
| MMMS | Marine Meteorological Monitoring Survey |
| MMS | Mineral Management Service |
| MMW | Millimeter Wave |
| MO | Meteorological Office |
| MO | Multiple Observations |
| MO&DA | Mission Operations and Data Analysis |
| MOAP | Meteorology Open Application Platform |
| MODIS | Moderate Resolution Imaging Spectrometer |
| MOG | Meteorological operations group |
| MOPITT | Measurement Of Pollution In The Troposphere |
| MOSS | Mobile Oceanography Support System |
| MOST | Multispectral Observations of Storm Tops |
| MPDA | Multiple PRF Dealiasing Algorithm |
| MPS | Meteorological Profiler System |
| MRAR | Meteorological Routine Air Report |