| Abbreviation | Definition |
|---|---|
| PIFI | Polarization Insensitive Fiber Isolator |
| PIG | Pipeline Inspection Gauge |
| PII | Publisher Item Identifier |
| PIIDB | Practice Implementation Indicator Data Base |
| PIK | Personal Information Kiosk |
| PIK | Portable Injection Kit |
| PIKC | Polyseda Iris Polyester King Cone |
| PIKS | Personal Information Kiosk System |
| PIL | Packaging Insert Leaflet |
| PIL | Plastic Impregnated Laminate |
| PIL | Product Information Leaflet |
| PIL | Product Information Letter |
| PILC | Paper-Insulated Lead Cable |
| PIM | Pre Inspection Meeting |
| PIM | Pre-Inspection Meeting |
| PIN | Post It Note |
| PIP | Protective Industrial Product |
| PIR | Pile Installation Recorder |
| PIS | Progressive Induction System |
| PISC | Panberes Internet Shopping Company |