- OSU
- Ohio State University (Academic & Science » Universities)Ohio State University (Academic & Science » Physics)**** Oregon State University (Academic & Science » Universities)*** Oklahoma State University (Academic & Science » Universities)* Open Source Unix (Computing » Software)* Office of Systems Operations (Academic & Science » Ocean Science)* Optimists Submit Urine (Miscellaneous » Funnies)* Outstanding Satisfactory Unsatisfactory (Academic & Science » Universities)* Oklahoma Second University (Academic & Science » Universities)* Other Software Unit (Computing » Software)* Observational Stimulation Unit (Medical » Laboratory)* Outstanding Satisfactory Or Unsatisfactory (Community » Educational)* Old Stinky Underwear (Miscellaneous » Funnies)* Oklahoma Scares Us (Miscellaneous » Funnies)
Abbreviations dictionary. 2012.