| Abbreviation | Definition |
|---|---|
| MECI | Machine Electrical Consultants Inc |
| MECI | Mendelson Electronics Company Inc |
| MECL | Modern Electronics Company Limited |
| MEDA | Maharashtra Energy Development Agency |
| MEDA | Metropolitan Economic Development Association |
| MEDC | Manchester Engineering Design Consultancy |
| MEDC | Marlborough Economic Development Corporation |
| MEDC | McAllen Economic Development Corporation |
| MEDC | McCook Economic Development Corporation |
| MEDC | McKinney Economic Development Corporation |
| MEDC | MI Econ Dev Corp |
| MEDC | Michigan Economic Development Corporation |
| MEDC | Mid East Development Corporation |
| MEDC | Monadnock Economic Development Corporation |
| MEDC | Montgomery Economic Development Corporation |
| MEDEC | MEDical DEvices Canada |
| MEDIC | Mercy Economic Development International Corporation |
| MEDL | Marconi Electronic Devices Ltd |
| MEDL | Minster Electronic Designs Ltd |
| MEE | Marchmont Enterprises Europe |