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What does O-O stand for?

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Rank Abbr.Meaning
OOObject Oriented (Programming)
O-OOwner Operator (trucking industry; also seen as O/O)
OOOlive Oil
OOPeroxide (functional group)
OOOn Order
OOOver and Out
OOOzzy Osbourne
OOOval Office
OOOwner Operator (trucking industry; also seen as O/O)
OOOperations Officer
OOOwner-Occupied (real estate)
OOSky West Airlines
OOOfficial Observer (amateur radio)
OOOptimum Online
OOOriginal Oratory
OOOfficers Only
OOOmbudsman's Office
OOOsteoid Osteoma
OOObiettivi Operativi
OOOrdering Officer
OOOperator Office (trunks)
OOOphthalmic Optician
O-OKingside Castle (chess notation)
OOOld Oakhamian
OOOptimistic Orators (Toastmasters Club)
OOOnderling Onafhankelijk (Dutch)

Note: We have 13 other definitions for O-O in our Acronym Attic

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