| Acronym | Definition |
|---|
| PASI➣Psoriasis Area and Severity Index |
| PASI➣Provincial Approach to Student Information (Canadian education initiative) |
| PASI➣Public Authority for Social Insurance |
| PASI➣Pan American Studies Institute |
| PASI➣Preapplication Statement of Intent (FAA) |
| PASI➣Professional Account Services Inc. |
| PASI➣Production, Availability, Shipments, Inventory |
| PASI➣Pioneer Air Systems, Inc. |
| PASI➣Professional Associate, Chartered Surveyors' Institution (now Associate, Royal Institution of Chartered Surveyors; UK) |