Programmable Array Logic 
Parents Are Listening 
Public Ada Library 
Public Access Line 
Phase Alternation Line 
Process Asset Library 
Permissive Action Link 
Phase Alternating Line 
Process Assembly Language 
Prototype Application Loop 
Public Access Lines 
Paducah and Louisville 
Paducah and Louisville Railroad 
Pallet 
Paradox Applications Language 
passive activity loss 
Performance Assurance Layer 
Personnel Allowance List 
Phase Alternation by Line 
Police Athletic League 
positron annihilation lifetime 
Production and Application of Light 
Programmer Assistance and Liaison 
Programming Assembly Language 
Paducah and Louisville Railway 
Parts Accumulation List 
Passenger Acceleration Lane 
Phase Alteration Line 
Phase Alternate Line 
Philippine Air Lines