| Abbreviation | Definition |
|---|---|
| PZEM | Part Zone Expansion Module |
| PZL | Pennzoil |
| PZS | PayZone Steering |
| PZT | Piezoactuator |
| PZT | PiZza cutter Tool |
| QA | Quick Access |
| QAC | Quick Access Caps |
| QAS | Quality Assurance System |
| QASIS | Quality Assurance System International Standard |
| QB | Quick Beauty |
| QB | Quick Build |
| QBB | Quick Break (circuit) Breaker |
| QBH | Quad Block Heater |
| QBJ | Quick Bevel Jack |
| QBK | Quick-Build Kit |
| QBS | Quality Based Selection |
| QBZ | QuackenBush Zirconium bead |
| QBZ | Quantum Bead Zirconia |
| QC | Quality Certified |
| QC | Quay Crane |