531 PD definitions

Public Domain 
Position Description 
potential difference 
Professional Development 
Parkinson's disease 
protection domain 
Powered Device 
Program Directive 
pulse duration 
Physical Delivery 
Police Department 
probability of damage 
probability of detection 
Per Diem 
Photo Diode 
pitch down 
Program Definition 
Program Director 
Project Director 
Protocol Discriminator 
Payload Developer 
peritoneal dialysis 
port dues 
Positive Displacement 
Product Development 
Program Development 
Project Definition 
Pulse Doppler 
passive detection 
Permits Division 
Personal Display 
Photo Detector 
Point of Departure 
population density 
Position Document 
Power Dissipation 
Presidential Directive 
Presidential Directives 
Press Division 
Pricing Data