area of responsibility 
Atlantic Ocean Region 
Authorized Organizational Representati… 
Area of Operational Responsibility 
Association of Realtors 
Astronomical Observation Request 
Atlantic Operating Region 
Replenishment Oiler 
abnormal occurrence report 
acknowledgment of receipt 
Address of Record 
adjusted odds ratio 
Adjusted odds ratios 
adjusted OR 
Afro International Ent. Limited 
After Outliers Removed 
after-operations recovery 
Age of Renaissance 
age-adjusted odds ratio 
Agent Orange Registry 
Album Oriented Rock 
aldehyde ferredoxin oxidoreductase 
Aldehyde oxidoreductase 
Aliquippa and Ohio River Railroad 
alternate opacity request 
anchor order 
Angle of Reflection 
Angolan kwanza readjustado 
annual operating requirement 
Annual Operating Requirements