| Abbreviation | Definition |
|---|---|
| PLCC | Primary Liver Cell Cancer |
| PLD | Programmable Logic Device |
| PLD | Program Listing Document |
| PLD | Polycystic Liver Disease |
| PLDI | Payload Data Interleaver |
| PLDM | Payload Management |
| PLDS | Payload Support |
| PLF | Plant Load Factor |
| PLGSS | Payload Ground Support Systems |
| PLH | Payload Handling |
| PLI | Position Location Information |
| PLI | Payload Interrogator |
| PLISN | Provisioning List Item Sequence Number |
| PLL | ProLymphocytic Leukaemia |
| PLL | Phase Locked Loop |
| PLM | Payload Module |
| PLM | Payload Monitoring |
| PLM | Payload Management |
| PLMS | Program Logistics Master Schedule |
| PLN | Pre-Launch Notification |
| PLN | Program Logic Network |
| PLO | Palestine Liberation Organisation |
| PLO | Parliamentary Liaison Officer |
| PLR | Prime Lending Rate |
| PLRD | Payload Requirements Document |
| PLRV | Payload Launch Readiness Verification |
| pls | please |
| PLS | Professional Land Surveyor |
| PLS | Propellant Loading System |
| PLS | Primary Landing Site |
| PLS | Preliminary Landing Site |
| PLS | Post Landing and Safing |
| PLS | Payload Systems |
| plscfm | please confirm |
| PLSL | Propellants and Life Support Laboratory |
| PLSP | Payload Signal Processor |
| PLSS | Primary Life Support Subsystem |
| PLSS | Portable Life Support System |
| PLSS | Portable Life Support Subsystem |
| PLT | Post-liver Transplantation |
| PLTS | Precision Laser Tracking System |
| PLUM | Payload Umbilical Mast |
| Pm | Post meridiem (after noon) |
| PM | Prime Minister |
| pm | post meridiem |
| PM | Power Management |
| PM | Program Manager |
| PM | Piranha Manager |
| PM | Project Manager |
| PM | Property Manager |