– (i) Object-Oriented Programming – Out Of Print OOS – (i) Occupational Overuse Syndrome – OneSAF Objective System – Open Operating System – Out Of Service OOTW – (i) (Military) Operations Other Than War (MOOTW or OOTW) OP OP (i) Observation Point/Post Ocean Pacific (surfwear and swimwear brand) Original Poster (internet) Order Point, in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items) Overpowered, often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong OPA – (i) Other Procurement, Army OPAC – (a) Online Public Access Catalogue op cit – (p) opera citata (Latin, "in the work cited") OPCON – (p) Operational control OPCW – (i) Organisation for the Prohibition of Chemical Weapons OPEC – (a) Organization of the Petroleum Exporting Countries OpenStreetMap - (p) OpenStreetMap OPFOR – (p) Opposing force(s) OPI (i) Office of Primary Interest Open Prepress Interface OPINTEL – (p) Operational Intelligence OPLAN – (p) Operation plan (also OpPlan) OPORD – (p) Operation order OPP (i) Ontario Provincial Police Operational Planning Process Other People's Property/Pussy/Penis (song) OPS (i) On-base plus slugging (baseball statistics) (p) Operations OPSEC (p) Operations security Open Platform for Security OPSI (a) Overwhelming post splenectomy infection UK Office of Public Sector Information OPTAR – (p) Operational target OPV – (i) Offshore Patrol Vessel OQ OQ - (i) Order Quantity, in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items) OR or – (s) Oriya language (ISO 639-1 code) OR – (i) Operating Room (surgery) – Operational/Operations Research – (s) Oregon (postal symbol) - overreciprocation - when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable ORAU – (a/i) Oak Ridge Associated Universities ORB – (a/i) Object Request Broker ORBAT – (p) Order of Battle ORD – (i) O'Hare International Airport in Chicago, Illinois (IATA Airport Code ORD) ORD – (i) Office of Research and Development – Operational Requirements Document ORF – (i) Operational Readiness Float ori – (s) Oriya language (ISO 639-2 code) ORISE – (a) Oak Ridge Institute for Science and Education orm – (s) Oromo language (ISO 639-2 code) ORNL – (i) Oak Ridge