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What does I/O stand for?

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Rank Abbr.Meaning
I/OIndustrial/Organizational (psychology)
IOIntermon Oxfam (Spain)
IOInstitute of Oceanography
IOIlluminati Online
IOInstalling Officer (International Order of DeMolay)
IOIgrzyska Olimpijskie (Polish: Olympic Games)
IOIllumninati Order
IOInstitutional Official (various organizations)

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