| Acronym | Definition |
|---|
| PSDI➣Pin Service Denial Indicator |
| PSDI➣Partito Socialista Democratico Italiano (Italian: Italian Democratic Socialist Party; est. 1947) |
| PSDI➣Presence-Sensing Device Initiation |
| PSDI➣Public Safety Data Interoperability (US DOJ) |
| PSDI➣Programming Skills Development Institute (India) |
| PSDI➣Physical Symptoms Distress Index (cardiology) |
| PSDI➣Public Service Directory Interactive |
| PSDI➣Project Software Development Incorporated |