Continuing Professional Development 
Central Pulse Distributor 
Coarse Pointing Device 
Crew Passive Dosimeter 
Call Processing Data 
CARDS PER DAY 
Center for Persons with Disabilities 
Common Path Distortion 
Common Path Distortions 
CONSOLIDATED PROGRAMMING DOCUMENT 
Crew Procedures Division 
Critical Process Departures 
Cross Polar Discrimination 
Call Processing Deloading 
Call Processing Description 
Capital Programmes Directorate 
Central Policy Database 
Commercial Payload Development 
Computer Products Division 
Computerized Preliminary Design 
Connection Propagation Delay 
Conseal Provate Desktop 
Construction Products Directive 
Copy/Paste Detector 
Cost per day 
Crew Propulsive Device 
Cumulative Probability Distribution