| Abbreviation | Definition |
|---|---|
| PAT | Performance Achievement Target |
| PAT | Production Acceptance Test |
| PAT | Problem Action Team |
| PATA | Parallel Ata |
| PATH | Search a specified Path for a program in another directory |
| PATOOT | Petersons Annual Trip On Old Tractors |
| PATP | Preliminary Authority To Proceed |
| PATS | Program for Analysis of Time Series |
| PAU | Probe Aerodynamic Upper |
| PAUSE | a Batch command to stop execution, display a message and wait for a keystroke |
| PAV | Personal Air Vehicle |
| PAV | Pressure Actuated Valve |
| PAV | Pneumatic Actuated Valve |
| PAWS | Protection Against Wrapping Sequence |
| PB | Protection Bit |
| PBC | Personal Business Commitment |
| PBCT | Proposed Boundary Crossing Time |
| PBD | Print and Break Drum |
| PBD | Professional Building Designer |
| PBDS | Perceived Benefit of Drinking Scale |
| PBGC | Pension Benefit Guaranty Corporation |
| PBL | Payload Bay Liner |
| PBM | Pharmacy Benefit Manager |
| PBM | Program Business Management |
| PBM | Power Balance Model |
| PBMA | Process-Based Mission Assurance |
| PBO | Personal Business Objective |
| PBP | Preburner Pump |
| PBP | Prohibited Breeding Program |
| PBPS | Post-Boost Propulsion System( |
| PBR | Professional Bull Rider |
| PBR | Plant Breeders Rights |
| PBRT | Pharmaceutical Benefits Remuneration Tribunal |
| PBS | Payroll Benefit Services |
| PBS | Point Based Safelists |
| PBS | Protective Breathing System |
| PBS | Pharmaceutical Benefits Scheme |
| PBSCH | Peripheral Blood Stem Cell Harvest |
| PBSCR | Peripheral Blood Stem Cell Rescue (transplant) |
| PBSP | Philippine Business for Social Progress |
| PBSSI | President of British Superultramodern Scientific Institution |
| PBTR | Pediatric Brain Tumor Research |
| PBTRI | Pediatric Brain Tumor Research Institute |
| PBW | Proportional Band Width |
| PBX | Private Branch Exchange (Telephone) |
| PBX | Private Branch Exchange |
| PBZ | Physiological and Biochemical Zoology |
| PC | Privy Council |
| PC | Personal Computer |
| pc | per cent |