OP


AcronymDefinition
OPOriginal Poster
OPOpinion
OPOperator (IRC)
OPOpus (Latin: A Work; used in referring to music)
OPOperation/Operational
OPOriginal Poster (internet newsgroups and message boards)
OPOther People
OPOne Piece (Anime)
OPOcean Pacific
OPOpera
OPOut of Print
OPOutput
OPOffice of the President
OPOpportunity (Ads)
OPOptical
OPOutput (Hyper Logo command)
OPOffice Professional
OPOak Park (Illinois)
OPOpposite (volleyball position)
OPOutput Power
OPOrganized Play (gaming)
OPOutpost (gaming)
OPOperating Profit
OPOrder of Preachers (Roman Catholicism; Dominican)
OPOverland Park (Kansas)
OPOld Patient
OPOral Presentation
OPOutpatient
OPOsteoporosis
OPOff-Peak (time)
OPOperating Procedure(s)
OPOverpowered (gaming)
OPOpening Post (internet message boards)
OPOrder Processing
OPOutreach Program
OPOne Power (Wheel of Time series)
OPOlympic Peninsula (Washington)
OPOffice of Policy (Social Security)
OPOptimus Prime (Leader of the Autobots, icon of the 80s)
OPOperating Pressure
OPOperator Panel
OPOil Pulling
OPOpposing Party (legal notation and billing)
OPObservation Point
OPOrganophosphate (insecticide)
OPOffice Productivity (course)
OPOptical Power
OPOrifice Plate (flowmeters)
OPOrder of Precedence
OPObservation Post
OPOsuuspankki (Finnish banking cooperative)
OPOperationssaal (German: Operating Room)
OPOriginal Production
OPOpen Pollinated (botany)
OPOrganophosphorus (pesticide)
OPOld Persian (linguistics)
OPOropharynx (anatomy)
OPOsmotic Pressure
OPOperation Phoenix (San Bernadino, CA after school program)
OPOperating Plan
OPOverly Powerful
OPOxidative Phosphorylation
OPOpportunities Page (CECOM)
OPOperational Priority (US Navy)
OPOffensive Power (online gaming)
OPOperations Order
OPOrdinis Praedicatorum (Latin: Order of Preachers)
OPOrdo Praedicatorum (Latin: Order of Preachers; formal name of Dominicans, a Catholic religious institution)
OPOrthographic Projection
OPOver Powered (gaming)
OPOperations Procedures
OPOrdnance Personnel (US Navy)
OPOxygen Pressure
OPOutpatient Pharmacy
OPOperational Program
OPOther Procurement
OPOriginal Pack (pharmacology)
OPOrder Point
OPOperation Officer (Navy)
OPOcciput Posterior (fetal position)
OPOil Purifier
OPOperational Picture
OPOsteitis Pubis
OPOrder of the Pelican (Society for Creative Anachronism)
OPOperation Point
OPOpponens Pollicis
OPOuvrier Professionnel (French: Professional Worker)
OPOptional Procedure
OPOral Production (test)
OPOccupation Permit (Hong Kong)
OPOperations Panel
OPOlden Polynice (basketball player)
OPOriginating Party
OPOligodendrocyte Progenitor
OPOver-Proof (of alcohol)
OPOperation Register
OPOpacity Project
OPOral Participation
OPOutsource Philippines
OPOptimal Partitioning (sectorization method)
OPOrbit Prediction
OPOperator Personal
OPOperator-Promoter
OPOrbiter Payload
OPOrienteering Problem
OPOrdnance Pamphlet
OPOhjelmointiputka (Finnish programming site)
OPOutpicked (gaming)
OPOrdnance Publication
OPOperational Phase/Project
OPOpponents Pollicis
OPDominican Sisters of Divine Providence (religious order)
OPOvernight Per Diem
OPOverlap Pulsing