Automatic Call Distribution 
Airborne Color Display 
Automatic Call Distributor 
Air Conditioning Demand 
acid citrate dextrose 
Alt Control Delete 
Allocated Configuration Documentation 
Atmospheric Chemistry Division 
AC Delco 
ACDELCO O.E. 
Arctic Coastal Dynamics 
Automated Call Distribution 
Automated Call Distributor 
Advanced Control Devices 
allergic contact dermatitis 
annealed cold drawn 
Architectural Control Document 
Average Call Distance 
Access Control Document 
Accuracy Control Document 
acid-citrate-dextrose 
Administrative Center Dallas 
Advanced Capabilities Division 
advanced conceptual design 
Aeronautical Charting Division 
Alternate Care Determination 
American College of Dentists 
Anti-Coincidence Detector 
Architecture Control Document 
Asian Cooperation Dialogue