Path Computation Element 
Patrol Craft, Escort 
Personal Consumption Expenditures 
Pollution Control Equipment 
Professional Continuing Education 
Punched-Card Equipment 
Patrol Craft Escort 
Physical Control Element 
Picture Control Entity 
Power Conditioning Equipment 
Power Control Electronics 
Power Conversion Electronics 
Process Communications Engineer 
Program Cost Estimate 
Pace Airlines 
Pacific Commodity Exchange 
PAL control equipment 
Papillary Cystadenomas of the Epididym… 
Paris Commodity Exchange 
Particulate Control Experiment 
Patient Care Encounter 
Patient Care Evaluation 
Patrol Escort 
Payload Control Electronics 
pentachloroethane 
perchloroethene 
Perchloroethylene 
percutaneous 
Peripheral Controller Enclosure 
Personal Care Expenditures