| Abbreviation | Definition |
|---|---|
| ME | a Marine Ecosystem |
| MEDEA | Measurements of Earth Data for Environmental Analysis |
| MEDS | Marine Ecological Database System |
| MEDS | Marine Environmental Data Service |
| MEDS | Meteorological and Environmental Data Services |
| MENV | Marine Environment |
| MEP-91 | Mesoscale Evolution Project - 1991 |
| MEP-91 | Mesoscale Evolution Project-1991 |
| MEPC | Marine Environment Protection Committee |
| MEQC | Marine Environmental Quality Committee |
| MERP | Marine Enterprise Resource Planning |
| MERS | Marine and Environmental Remote Sensing |
| MESA | Marine Education Society of Australasia |
| MESA | Model Experimental Systems Analysis |
| MESG | Monitoring and Evaluation Steering Group |
| MESH | Mapping European Seabed Habitats |
| MESL | Marine Environment Studies Laboratory |
| MESO | Marine Environmental Support Office |
| METCON | Metropolitan Consortium for Minorities in Science and Engineering |
| METEOSAT-3 | Meteorological Satellite |