| Abbreviation | Definition |
|---|---|
| PHWB | Packman Hot Water Boiler |
| PHWB-LP | Packman Low Pressure Hot Water Boiler |
| PHWH | Portable Hot Water Heater |
| PHWN | HeadPHone Winder |
| PHWS | Portable Hot Water System |
| PI | Paramagnetic Insulator |
| PI | Petrol Injection |
| PI | Power Improved |
| PI | Product Information |
| PI | Product Innovation |
| PIAB | Party In A Box |
| PIB | Pozidrive Insert Bits |
| PIB | Producto Interno Bruto |
| PICC | Pre-Ignition Catalytic Converter |
| PICT | Products Ideas Creativity and Trends |
| PID | Painted Internal Diameter |
| PID | Product Installation Diagram |
| PID | Products, Innovation, Design |
| PIDS | Product Information Data Set |
| PIECE | Put Into Each Carton Easily |