| Acronym | Definition |
|---|
| DDX➣Differential Diagnosis |
| DDX➣Device Dependent X |
| DDX➣Display Dispatch Message |
| DDX➣Distributed Data Exchange |
| DDX➣Digital Dental Exchange (software) |
| DDX➣Dialog Data Exchange |
| DDX➣Device Dependent X (computing) |
| DDX➣Direct Digital Amplification |
| DDX➣Doctors and Dentists Exemption (regulatory scheme; UK) |
| DDX➣Destroyer, Experimental (US Navy next generation ship) |