| Abbreviation | Definition |
|---|---|
| MDERW | Med- Emerg International, Inc. Warrants |
| MDFC | Media4 Corp. |
| MDGPPK | Medgroup, Inc. |
| MDIA | Medtech Diagnostics, Inc. |
| MDIH | M D I Entertainment, Inc. |
| MDII | Mechanical Dynamics, Inc. |
| MDIX | Medix Resources, Inc. |
| MDJT | MedJet, Inc. |
| MDKI | Medicore, Inc. |
| MDLI | Medicalogic, Inc. |
| MDLK | Medialink Worldwide, Inc. |
| MDLZ | Mondelez International |
| MDMM | Medium4.Com, Inc. |
| MDMMW | Medium4.Com, Inc. Warrants |
| MDNR | Modern Records, Inc. |
| MDPA | Metropolitan Health Networks |
| MDPWL | MidAmerican Energy Company |
| MDPWM | MidAmerican Energy Company |
| MDPWN | MidAmerican Energy Company |
| MDPWV | Metropolitan Health Networks |