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What does OI stand for?

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Rank Abbr.Meaning
OIOwens-Illinois, Inc. (glass container and plastics manufacturer)
OIOriental Institute
OIOpen Interest (finance)
OIOsteogenesis Imperfecta (brittle bone bisease)
OIOperation Ivy (Ska band)
OIOutside in (Frisbee throw)
OIOffice of Investigations
OIOld Irish (dialect)
OIOpportunistic Infection
OIOceanology International (periodic conference and trade show)
OIOperating Income
OIOffice of Information
OIOptical Illusion
OIOxfam International (UK)
OIOperator Interface
OIOvulation Induction (fertility treatment)
OIOptimist International (St. Louis, MO)
OIOther Insurance
OIOptimum Interpolation
OIOrdinary Income (US IRS)
OIOxygen Index
OIOpportunity International (Oak Brook, IL)
OIOffice of Intelligence (USCS)
OIOperating Instruction
OIOrphans International
OIOrcas Island (Washington)
OIObjeto Indirecto (Spanish grammar)
OIOsmose Inverse (French: Reverse Osmosis)
OIOptical Isolator (Telcordia)
OIOre Ida (food brand)
OIOther Investigation (US IRS)
OIOptical Interface
OIOutside Information
OIOpening Instructions
OIOperations Integration
OIOckenden International (UK registered charity)
OIOperational Instruction
OIOpto-Isolator (electronics)
OIOffice Interface
OIOperational Issue
OIOperational Instrumentation
OIOrganization Identifier (ASN.1)
OIOutput Isolation
OIOrder for Information (EPA)
OIOperator Interrupt (telecommunications)
OIOutline of Investigation
OIOrganization Indicator
OIOrganizational Integrator
OIOptical Improvements
OIOptical Improved
OIOFISA Informatique (Lausanne, Switzerland)
OIOrganizationally Impaired
OIOutreach International, Inc. (Independence, MO)
OIOrbit Infotech (New Delhi, India)
OIOral Irrigator (dentistry)
OIOperations Interface
OIOpenindiana (open source computing)

Note: We have 18 other definitions for OI in our Acronym Attic

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