What does O I stand for?

What does O I mean?

OI	Orders In Business » General
OI	Osteogenesis Imperfecta Medical » Physiology
OI	Osteogenesis Imperfecta Community » Non-Profit Organizations
OI	Opportunistic Infections Community » Music
OI	Operating Income Business » Accounting
OI	Open Interest Business » Accounting
OI	Opportunistic Infection Medical » Physiology
OI	Owens Illinois, Inc. Business » NYSE Symbols
OI	Or Immediate Business » General
OI	Order Information Business » General
OI	Orthopedic Impairment Community » Educational
OI	Optimum Interpolation Academic & Science » Ocean Science
OI	Output Input Community
OI	Out Of Iraq Governmental » Military
OI	Orthopedically Impaired Medical » Physiology
OI	Outside Influence Governmental » US Government
OI	Object Interface Computing » General
OI	Orthostatic Intolerance Miscellaneous » Unclassified
OI	Office International Miscellaneous » Unclassified
OI	Ordinal Indicator Miscellaneous » Unclassified
OI	Opto Isolator Academic & Science » Electronics
OI	Office of Investigation Community » Educational
OI	Optical Isolator Miscellaneous » Unclassified
OI	Outreach International Community » Non-Profit Organizations
OI	Other Identification Miscellaneous » Unclassified