The meaning of the Acronym OI is...

OI is

• Orbiter Instrumentation
• Orbiter Insertion
• Operations Interface
• Operational Instrumentation

More Meanings For OI:

• Opto Isolator
• Optimum Interpolation
• Open Interest
• Operating Income
• Omega Intertainment
• Or Immediate
• Orders In
• Order Information
• Owens Illinois, Inc.
• Option Investment
• Orthopedic Impairment
• Office of Investigation
• Opportunistic Infections
• Outreach International
• Osteogenesis Imperfecta

OI is also in:

• Accounting
• Educational
• Electronics
• Firms
• General
• Music
• Non-Profit Organizations
• NYSE Symbols
• Ocean Science
• Stock Exchange