| Abbreviation | Definition |
|---|---|
| PA | Power Amplifier |
| PA | Process Analyzer |
| PA | Public Address |
| PAC | Perceptual Audio Coder |
| PAC | Predictive Application Control |
| PACE | Programmable Arcade Circuit Emulator |
| PACER | Public Access to Court Electronic Records |
| PACER | Public Access to Court Electronic Records |
| PACER | Public Acess To Court Electronic Records |
| PACVD | Plasma-Assisted Chemical Vapor Deposition |
| PAE | Power-Added Efficiency |
| PAE | Premier Auto Electric |
| PAG | Potential Acoustic Gain |
| PAL | Phase Alternating Line |
| PAL | Programmable Array Logic |
| PALC | Plasma Addressed Liquid Crystal |
| PAM | Process Application Module |
| PAMS | Portable Attenuation Measurement System |
| PAPR | Peak-to-Average Power Ratio |
| PAR | Parabolic Anodized Reflector |