- CSO
- Combined Sewer Overflow (Community)**** Central Statistical Office (Governmental » US Government)** Civil Society Organization (Community » Non-Profit Organizations)** Chief Scientific Officer (Business » Positions)* Commissioners Standard Ordinary (Governmental)* Civil Society Organisation (Community » Non-Profit Organizations)* Cincinnati Symphony Orchestra (Community » Music)* Community Services Office (Community)* Christian Science Organization (Community » Religion)* Computing Services Office (Academic & Science » Universities)* Cumhurbaskanligi Senfoni Orkestrasi (International » Turkish)* Computer Security Officer (Governmental » Military)* Computer Security Officer (Governmental » NASA)* Computer Security Officer (Academic & Science » Universities)* Computer Security Officer (Computing » Security)* Computer Security Officer (Business » Positions)* Computer Security Officer (Governmental » US Government)* Connecticut Southern Railroad (Regional » Railroads)* Computer Security Officials (Governmental » NASA)* Chief Safety Officer (Governmental » Military)* Customer Support Officer (Business » Positions)* Contract Standing Order (Governmental » US Government)* Correct Solution Only (Academic & Science » Chemistry)* Closely- Spaced Object (Governmental » Military)* Colonial Secretary's Office (Governmental)* Computer Systems Operation (Computing » General)
Abbreviations dictionary. 2012.