| Acronym | Definition |
|---|
| MDx | Molecular Diagnostics |
| MDx | Managed DirectX (Microsoft) |
| MDx | Miami-Dade Expressway Authority (Florida) |
| MDx | Modular Digital Exchange |
| MDx | Multiple Index |
| MDx | Multi Dimensional Expressions |
| MDx | Managed Direct X |
| MDx | Mobile Data Exchange (computing) |
| MDx | Multi Dimensional Expression |
| MDx | Modular Digital Exchange (Redcom Laboratories, Inc.) |
| MDx | Mountain Dew X |
| MDx | Multi-Dimensional Luxury (Honda) |
| MDx | Modify Index (assembler language instruction) |
| MDx | Multi-Channel Data Exchange |
| MDx | Maintenance Diagnostic Extended |
| MDx | Midland Document Exchange |