Kayan - Language code (ETLW)
Pacific Democrat Union (EAIO)
Packet Data Unit (MLOA)
Parti Dahomeen de l'Unite - Dahomean Unity Party - Benin - Political party
Parti Democrate Unifie - Unified Democratic Party - Name replaced by Section Voltaique de Rassemblement - Burkina Faso - Political party
Paysandu - Uruguay - Airport symbol (OAG)
Performance Diagnostic Unit (SAUS)
Phase Demodulation Unit
Philippines Digital Upgrade (SAUS)
Photomultiplier Detector Unit (KSC)
Pilot's Display Unit (MCD)
Plasma Display Unit (SAUS)
Plug Distribution Unit (SAUS)
Positive Displacement Unit - Mechanical pumps
Power Distribution Unit (AAG)
Power Drive Unit (MCD)
Pressure Distribution Unit
Process Demonstration Unit - Chemical engineering
Process Development Unit - Chemical engineering
Produce - Telegraphy (PCTE)
Product Development Unit
Product Distribution Unit (SAUS)
Production Distribution Unit (AAG)
Programmable Delay Unit
Programmable Diagnostic Unit - TACOM - Army
Project Development Unit - Chemical engineering
Projection Display Unit
Propane Deasphalting Unit - Petroleum engineering
Protocol Data Unit - Telecommunications
Pulsed Doppler Ultrasonography - Radiology (DAVI)
Pulse Detection Unit (NASA)
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