| Abbreviation | Definition |
|---|---|
| LWS | Light Warning Sensor |
| LWS | Lightning Warning Set |
| LWS | Local Weather Service |
| LWS | Low Water at Spring Tide |
| LWST | Lowest |
| M1FC | Model 1 Full Capacity |
| MA | Middle Air |
| MA | Moist Air |
| MAB | Man And the Biosphere |
| MACOM | Major Army Command |
| MAD | Manipulating Aeromagnetic Data |
| MAD | Measured Air Device |
| MAF | Mass Air Flow |
| MAGTF | Marine Air Ground Task Force |
| MAGTF | Marine Air-Ground Task Force |
| MAJCOM | Major Command |
| MAP | Measure of Atmospheric Pressure |
| MAQ | Meteorology and Air Quality |
| MARC | Mid- America Regional Council |
| MARC | Mid-America Regional Council |