What does OS stand for?

What does OS mean?

OS	Orchard Street Miscellaneous » Unclassified
OS	Outside Shot Community » Sports
OS	Other Singer Business » Positions
OS	Outside Scope Governmental » FBI Files
OS	Oculus Sinister Miscellaneous » Unclassified
OS	Ouvrier spécialisé International » French
OS	Open Street Business » Stock Exchange
OS	Object Summary Miscellaneous » Unclassified
OS	Opposite Strand Medical » Human Genome
OS	Out Sized Business » Positions
OS	Old Sebilis Miscellaneous » Unclassified
OS	Original Special Business » Products
OS	Operating Strength Governmental » Military
OS	Optional Stopping Governmental » Transportation
OS	Operating Style Miscellaneous » Unclassified
OS	Overhead Spending Business » General
OS	Oculus Sinister - Left Eye Medical » Physiology
OS	Orthopterists' Society Medical » Veterinary
OS	Ocular Sinister Medical » Physiology
OS	Ownage Squad Miscellaneous » Unclassified
OS	Overhead Sending Computing » Networking
OS	Overly Short Miscellaneous » Unclassified
OS	Outer Sensor Governmental » Military
OS	Left eye (oculus sinister) Medical » Physiology
OS	Organ Series Community » Music