| Acronym | Definition |
|---|
| PIES➣Physical, Interlectual, Emotional, Social (psychological development) |
| PIES➣Product Information Exchange Standard |
| PIES➣Pollution-Prevention Information Exchange System |
| PIES➣Project Independence Evaluation System |
| PIES➣Pressure Inverted Echo Sounder |
| PIES➣Photographic Image Editing System |
| PIES➣Preliminary Innovation Evaluation Service |
| PIES➣Procurement & Inventory of Equipment System |
| PIES➣Packaged Interchangeable Electronic System |
| PIES➣Positive Ion Ejection System |