Commonwealth Dental Association 
Command and Data Acquisition 
Communications Decency Act 
Cosmic Dust Analyzer 
Coin Detection and Announcement 
Compound Document Architecture 
Capital Dividend Account 
charge density analysis 
Child Development Associate 
Compound Documents Architecture 
Core Disruptive Accident 
Critical Design Audit 
Cubic Defense Applications 
cylindrical deflector analyzer 
CANADIAN AIR 
Canadian Diabetes Association 
Central Design Agency 
Clean Dry Air 
Clinical Document Architecture 
Continuous Descent Approach 
Copper Development Association 
California Dental Association 
Call Deflection Alerting 
Call Distribution to Attendant 
Call Duration Advice 
Canadian Dental Association 
Canadian Department of Agriculture 
Canadian Drilling Association 
Central Design Activity 
Central Dredging Association