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What does OR stand for?

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Rank Abbr.Meaning
OROn Request
ORO-Ring
OROutdoor Research
OROffice of Record
OROfficial Records (Of the American Civil War; historical citations)
OROregon (US postal abbreviation)
OROrange Range (Japanese rock band)
OROrganization Administrator
ORObject Reference (CORBA)
OROperating Range
OROperating Room
OROpen Repair
OROperations Research
OROperations Room
OROperations Requirements
OROperations Resources
OROntario Reports
OROak Ridge
OROfficer Representative
OROn-Site Representative
OROpen Root (welding)
ORObject Recognition
ORObjective Response
OROptical Router
OROdds Ratio (element of statistical regression analysis, science)
OROverall Resistance
OROfficial Receipt
OROxygen Reduction
OROlympic Record
OROperational Reserve
OROperational Review
OROperational Research
OROperational Requirement
OROperational Reliability
OROther Ranks (British military)
ORObserved Ratio
OROutreach
OROptimal Routing (telecom)
OROnion Ring
OROverload Relay
OROccupancy Rate
ORObject Reuse
OROccurrence Report
OROffensive Rebound (basketball)
OROrganized Rhyme (rap group)
OROperational Readiness
OROverride
ORObject to Relational
OROperating Reactor
OROpen Repositories (Conference)
OROutside Rehearsals
OROmani Rial (national currency)
OROperationally Ready
OROsservatore Romano (Vatican newapaper)
OROmnidirectional Range
OROrgone (energy)
OROndernemingsraad
OROwn Recognizance
OROver Rate (cricket scoring)
OROnion Routing
OROmega Rho (honors society for Operations Researchers)
OROristano, Sardegna (Italian province)
OROriginator / Recipient
OROutward Radial
OROrdinary Proton (event)
OROrthogonal Region
OROrdnance Requirement
OROwasco River Railroad
OROutward Routing
OROld Ruymian (alumni of Chatham House Grammar School for boys, Ramsgate, Kent, UK)
OROnly Replication/Replicating
OROffence Report (police incident code; New Zealand)
OROwner's Risk
OROwyhee River (Snake River; various locations)

Note: We have 47 other definitions for OR in our Acronym Attic

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