| Acronym | Definition |
|---|
| MRX➣Market Research |
| MRX➣Magneto Resistive Extended |
| MRX➣Medicis Pharmaceutical Corporation (stock symbol) |
| MRX➣Mission Rehearsal Exercise (US DoD) |
| MRX➣Magnetic Reconnection Experiment |
| MRX➣Mental Retardation, X-Linked |
| MRX➣Magnetic Resonance Expert |
| MRX➣Magneto-Resistive Extended |
| MRX➣Magnetic Resonance, Soft Spectrum Coupled X-Ray Laser |
| MRX➣Michael Russo Experimental Motors (est. 2005) |