31 RAO definitions

Revenue Accounting Office 
Regional Accounting Office 
Raybestos 
Remedial Action Objectives 
Radio Astronomical Observatory 
Radio Astronomy Observatory 
Ram Air Outlet 
remedial action objective 
Resource Analysis Office 
Response Action Outcome 
right anterior oblique 
rotational acetabular osteotomy 
Raleigh-Area Operations 
Records Accounting Office 
Records and Archives Office 
Recurrent airway obstruction 
Regional Account Office 
Remedial Action Oversight 
Remote Automation Objects 
renal arterial occlusion 
renal artery occlusion 
Research Acquisition Organisation 
Research Announcement of Opportunity 
retinal artery occlusion 
retina-specific amine oxidase 
Retired Activities Office 
Retiree Activities Office 
Revenue Accounitng Office 
reversible airway obstruction 
right anterior occipital