| Abbreviation | Definition |
|---|---|
| PDLE | Process Development Laboratory East |
| PDLS | Professional Development Laboratory School |
| PDP | Parallel Distributed Perceptrons |
| PDPL | Photonic Device Physics Laboratory |
| PDRL | Product Development Research Laboratory |
| PDU | PropaneDiol Utilization |
| PDW | Platlet Distribution Width |
| PE | PhacoEmulsification |
| PE | PhytooEstrogen |
| PE | Pressure Equalization |
| PEA | Phenyl Ethyl Amine |
| PEEL | Pittsburgh Experimental Economics Laboratory |
| PEML | Particle Emissions Measurement Laboratory |
| PEML | Particulate Emissions Measurement Laboratory |
| PEML | Port Erin Marine Laboratory (University of Liverpool) |
| PEML | Precision Measuring Equipment Laboratory |
| PEPL | Plasmadynamics and Electric Propulsion Laboratory |
| PERAL | Plant Epidemiology and Risk Analysis Laboratory |
| Perid | peroxidase |
| PERK | Physical Evidence Recovery Kit |