| Orpheus Descending | Orion (comics) | Oribi Gorge |
| ORACLE (computer)The ORACLE or O ak R idge A utomatic C omputer and L ogical E ngine an early computer built by Oak Ridge National Laboratory, was based on the Institute for Advanced Study (IAS) architecture developed by John von Neumann. As with all computers of its era, | OrthostatAn orthostat is a large stone set upright. Menhirs and other standing stones are technically orthostats although the term is only used by archaeologists to describe individual prehistoric stones that constitute part of larger structures. Common examples i | Orc (William Blake)Orc (a proper name) is one of the characters in the complex mythology of William Blake. Unlike the medieval sea beast, or Tolkien's humanoid monster, his Orc is a positive figure, the embodiment of creative passion and energy, and stands opposed to Urizen |
| Ormonde CastleOrmonde Castle was the seat of the Butler family—Earls and later Dukes of Ormonde, who acquired the castle in 1315. The castle stands above the River Suir on the east side of Carrick-on-Suir, County Tipperary, Ireland. Today, the oldest part of the castle | Origin of SymmetryOrigin of Symmetry Origin of Symmetry is British rock band Muse's second album, released in the summer of 2001 on Mushroom Records in the UK. Track Listing #"New Born" #"Bliss" #"Space Dementia" #"Hyper Music" #"Plug in Baby" #"Citizen Erased" #"Micro Cut | OrnexOrnex is a small town and commune in the Ain departement of eastern France, located on the RN5 highway between the Jura mountains and the Swiss border. Located nine kilometres from Geneva, many inhabitants commute across the Swiss border each morning to j |
| OrmulumThe Ormulum is a work of metrical Biblical exegesis written in early Middle English by a man named "Ormin". The work is notable for being a key to the pronunciation of early Middle English at a critical time. The author is unusual, in that he names himsel | Oroborus (window manager)This article refers to the window manager Oroborus. Ouroboros is the ancient symbol of a snake biting its own tail. In Unix computing, Oroborus is a minimalist window manager for the X Window System. The project also provides some tools which can be usefu | Orlando RamírezOrlando Ramirez (born December 18, 1951 in Cartagena, Colombia) is a former Major League Baseball backup shortstop and right-handed batter who played for the California Angels between 1974 and 1979. In 143-game career, Ramirez batted. 189 with 16 RBI, 24 |
| Order of the Iron Crown | Orlando Cabrera | Oral Torah |
| Orphan (typesetting) | Oresund Region | Origin (comics) |
| Orphan process | Orissa Communist Party | Orchestre de Chambre de Lausanne |
| Orchestre de la Suisse Romande | Organizational Excellence Award | Oranges and Lemons (album) |
| Organisationally Unique Identifier | Oranmore | Orthodox Study Bible |
| Oranienbaum, Russia | Orbiter | Order of battle at Jutland |
| Oral thrush | Orange City | Orange Grove |
| Orinda | Orangeburg | Orchard Park |
| Oronoco | Orangism | Ordu Province |
| Oregon Ballot Measure 60 (1998) | Orgueil | Orchha |
| Orc (Warhammer) | Ordre des traducteurs, terminologues et interprètes agréés du Québec | Orthotomic |
| Oregon Coast Aquarium | Orion Arm | Orange Blossoms |
| Orpheus (disambiguation) | Orestes Brownson | Orelie-Antoine de Tounens |
| Oregon Department of Transportation | Orthodox temple | Organon International |
| Orania | Origins (Steve Roach) | Orange Tip |
| Oracle Rdb | Organ repertoire | Orchard Park High School |
| Orlando: A Biography | Orlando (movie) | Oradour |
| Orlando (disambiguation) | Orsa | Orlando Project |
| Orchard House Yard | Orlando (television) | Ormen Lange |
| Origin, Nature and History of Aegean civilization | Orbiter (sim) standard distribution | Origin of Albanians |
| Orb Union Astray mobile suit | Orphism | Original Celtics |
| Ormsby M. Mitchel | Orchard FM | Orpington (chicken) |
| Orbit (disambiguation) | Orphan drug exclusivity | Origins of rock and roll |
| Orchard Lake | Orsha (planet) | Orpiment |
| Oralux | Order of Ouissan Alaouite | Order-disorder |
| Orbis Pictus | Order of Leopold | Orff Schulwerk |
| Oranjemund (Constituency) | Orange County Fairgrounds | Orang Asli |
| Ore (disambiguation) | Organophosphate | Orders of magnitude (density) |
| Oregon Institute of Technology | Orange Line, KMRT | Orbiter Processing Facility |
| Orange (word) | Organic (military) | Orlando Hernández |
| Orthodox Church of Jerusalem | Orpheus Chamber Orchestra | Orlando (character) |
