| Abbreviation | Definition |
|---|---|
| PELV | Protective Extra Low Voltage |
| PEM | Photo-Elastic Modulator |
| PEM | Plastic Encapsulated Microcircuit |
| PEM | Power Electronics Module |
| PEMC | Power Electronics and Motion Control |
| PEML | Printed Electronic Materials Lab |
| PEMS | Pedro Electrical Mechanical Services |
| PEMS | Precision Electric Motor Sales |
| PEMS | Programmable Electrical Medical System |
| PEMS | Pump Electronic Monitoring System |
| PEMU | PolyElectrolyte MUltilayer film |
| PEN | Periodic Electronic Newsletter |
| PEP | Peak Envelope Power |
| PEP | Picture Element-Pixel |
| PEP | Psychoanalytic Electronic Publishing |
| PEPB | Princeton Electric Plant Board |
| PEPI | Portage Electric |
| PEPP | Pennsylvania Electronic Payment Program |
| PEPPER | Payment Error Prevention Program Electronic Report |
| PEPPER | Program for Evaluating Payment Patterns Electronic Report |