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What does ORO stand for?

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Rank Abbr.Meaning
OROOrono (Amtrak station code; Orono, ME)
OROOxford Reference Online
OROOak Ridge Office (US Department of Energy)
OROOak Ridge Operations (DOE)
OROOil Recovery Operations
OROOntario Regional Office (Ontario, Canada)
OROOffice of Regional Operations (EPA)
OROOperations Research Office
OROOriginal Registered Owner (legal term)
OROOnde Radio Ovest (band)
OROOffsite Response Organization
OROOperations Research Organization

Note: We have 16 other definitions for ORO in our Acronym Attic