What does S.O stand for?

What does S.O mean?

SO	Some Of .... Medical » Hospitals
SO	Sort Of Internet » Chat
SO	Somalia Regional » Countries
SO	The Source Of .... Academic & Science » Ocean Science
So	Sonntag International » German
SO	Sold Out Community » Media
SO	Special Offer Business » General
SO	Shoot Out Community » Law
SO	Shout Out Internet » Chat
SO	Somali Regional » Language Codes (2 Letters)
SO	Sign Out Computing » Security
SO	Special Order Business » General
SO	Significant Other Internet » Chat
SO	Significant Other Community
SO	Second Order Business » Products
SO	Siehe Oben International » German
SO	Slip On Miscellaneous » Clothes
SO	Straight On Governmental » Transportation
SO	Special Operations Governmental » Military
SO	Special Operations Governmental » Police
SO	Shared Object Computing » General
SO	Self Organizing Computing » General
SO	Sign Off Miscellaneous » Unclassified
SO	Student Orientation Academic & Science » Universities
SO	Student Organizations Miscellaneous » Unclassified