| Abbreviation | Definition |
|---|---|
| MCF | Medipix Configuration File |
| MCI | Media Control Interface Command script |
| MCL | Macro library (MultiEdit) |
| MCL | MultiEdit Macro Library |
| MCP | Capsule Application script |
| MCP | NetMC Player Composed Media multimedia file |
| MCP | Printer driver (Mathcad) |
| MCS | MathCAD Image file |
| MCW | MacWrite II Text document |
| MD | MDCD Compressed file archive |
| MDA | Microsoft Access Add-in |
| MDB | Database (MS Access) |
| MDE | MDE database ( Microsoft Access) |
| MDL | 3D Design Plus Geometrical MoDeL |
| MDL | Rational Rose 98 Object design MoDeL |
| MDL | Spreadsheet (CA-Compete!) |
| MDM | Modem definition (TELIX) |
| MDN | Blank database template (MS Access) |
| MDP | Project workspace (MS Developer Studio) |
| MDR | Microdrive file (ZX Spectrum emulator) |