- OSA
- Obstructive Sleep Apnea (Medical » Physiology)* Osage (Regional » Language Codes (3 Letters))* Osaka, Japan (Regional » Airport Codes)* Office Of Student Activities (Academic & Science » Universities)* Open Service Access (Computing » General)* Office Of Special Affairs (Governmental » Military)* Office Of Special Affairs (Governmental » US Government)* Official Secrets Act (Governmental » US Government)* Open Scripting Architecture (Computing » General)* Open System Architecture (Governmental » Military)* Open System Architecture (Computing » General)* Oshkosh Student Association (Community » Educational)* Operational Support Airlift (Governmental » Military)* Office of the Secretary of the Army (Governmental » Military)* Omnibus Service Authority (Computing » Networking)* Operational Services Agreement (Governmental » Military)* Office Support Assistant (Business » Positions)* Open Standard Architecture (Computing » General)* Office Systems Architecture (Computing » General)* Overhead Squat Area (Medical » Physiology)* Outdoor Soccer Of America (Community » Sports)
Abbreviations dictionary. 2012.