Atmospheric Reentry Demonstrator 
Auxiliary Repair Dock 
Auxiliary Repair Dry Dock 
Aquatic Resource Division 
Automatic Release Date 
Automatic Ring Down 
Access Rights Details 
acid rock drainage 
Acute renal disease 
acute respiratory disease 
admission, review and dismissal 
Advanced Reactor Division 
Advanced Research and Development 
Agency Resource Domain 
Agricultural Research for Development 
Air and Radiation Division 
Aircraft Repair Depot 
Antibiotic-responsive diarrhea 
Apple Remote Desktop 
Associates in Rural Development 
Automated Release Data 
Auxiliary Repair Drydock 
Abort Region Determinator 
Absorption rate density 
Academy of Rheumatoid Diseases 
Accelerated Rehabilitation Disposition 
Accelerated Rehabilitative Disposition 
Acceptance Requirement Document 
aci-reductone dioxygenase 
Acoustic Research Division