OR

Acronym	Definition
OR	Oregon (US postal abbreviation)
OR	Operating Room
OR	Outreach
OR	Override
OR	On Request
OR	Oak Ridge
OR	Operations Research
OR	Optimal Routing (telecom)
OR	Open Repositories (Conference)
OR	O-Ring
OR	Official Records (Of the American Civil War; historical citations)
OR	Object Reference (CORBA)
OR	Operational Research
OR	Omani Rial (national currency)
OR	Odds Ratio (element of statistical regression analysis, science)
OR	Object Recognition
OR	Operating Range
OR	Outdoor Research
OR	Occupancy Rate
OR	Osservatore Romano (Vatican newapaper)
OR	Orange Range (Japanese rock band)
OR	Operational Readiness
OR	Offensive Rebound (basketball)
OR	Olympic Record
OR	Ondernemingsraad
OR	Orgone (energy)
OR	Operational Reliability
OR	Operating Reactor
OR	Operational Review
OR	Over Rate (cricket scoring)
OR	Other Ranks (British military)
OR	Own Recognizance
OR	Operations Resources
OR	Open Root (welding)
OR	Official Receipt
OR	Objective Response
OR	Operations Room
OR	Onion Ring
OR	Operational Requirement
OR	Operations Requirements
OR	Open Repair
OR	Officer Representative
OR	Object Reuse
OR	Onion Routing
OR	Owner's Risk
OR	Oxygen Reduction
OR	Occurrence Report
OR	Overload Relay
OR	Organization Administrator
OR	Object to Relational
OR	On-Site Representative
OR	Operationally Ready
OR	Overall Resistance
OR	Operational Reserve
OR	Ontario Reports
OR	Office of Record
OR	Omega Rho (honors society for Operations Researchers)
OR	Oristano, Sardegna (Italian province)
OR	Omnidirectional Range
OR	Observed Ratio
OR	Originator / Recipient
OR	Organized Rhyme (rap group)
OR	Optical Router
OR	Outward Radial
OR	Outside Rehearsals
OR	Ordinary Proton (event)
OR	Orthogonal Region
OR	Owasco River Railroad
OR	Ordnance Requirement
OR	Outward Routing
OR	Old Ruymian (alumni of Chatham House Grammar School for boys, Ramsgate, Kent, UK)
OR	Only Replication/Replicating