| Orion (constellation) | Ordsall Hall | Ork |
| Ordo Templi OrientisOrdo Templi Orientis (OTO is an occult organization and is described by many as a secret society. is also known as the 'Order of the Temple of the East', or the 'Order of Oriental Templars. The Beginnings The O. was founded in Germany by Theodor Reuss aro | OrishaThis article is about the god. Orishas is also the name of a hip-hop/latino fusion band whose members are Cubans living in Spain. Orixa is also the name of a rock en espanol/alternative rock band. An Orisha orixa is a spirit reflecting a particular aspect | Oregon Delegation in 107th &/or 108th Congress (2001-2005)Senators Gordon Smith, Republican Ron Wyden, Democrat Representatives David Wu, Democrat, 1st District Greg Walden, Republican, 2nd District Earl Blumenauer, Democrat, 3rd District Peter DeFazio, Democrat, 4th District Darlene Hooley, Democrat, 5th Distri |
| Order of CanadaThe Order of Canada is Canada's highest civilian honour, awarded to those who adhere to the Order's motto Desiderantes meliorem patriam meaning "they desire a better country. The Order was created on July 1, 1967, on the country's 100th anniversary, to re | Orthellius familyOrthellius family Ortelius family noted family of cartographers and prominent merchants originally from Augsburg but settling in the sixteenth century in Antwerp, Belgium. The most famous cartographer of this family is Abraham Ortelius, author of the Thea | OrodrethIn the fiction of J. Tolkien, Orodreth was an Elf of the First Age, the son of Angrod and nephew of Finrod Felagund, and a ruler of Nargothrond. His name in Quenya was Artaresto . Orodreth was born in Valinor to Angrod and Eldalot a Noldorin lady whose na |
| Order statisticIn statistics, the n''th order statistic of a sample is equal to the n''th-smallest sample value. For example, if the sample values are: :6, 9, 3, 8 then the second order statistic is: x 6. The first order statistic (or smallest order statistic is always | Orthocentric systemIn geometry, an orthocentric system is a set of four points in the plane where one point is the orthocenter of the triangle formed by the other three. If four points form an orthocentric system, then each of the four points is the orthocenter of the other | Orion (mythology)Orion one of the Titans of Greek mythology, is the archetype of the hunter. Orion in Mythology Orion is born in Boeotia, the fertile heart of civilized Hellas, whose folk the Boeotian poet Hesiod described as farmers in the winter and sailors in the summe |
| Oranienburg | Orography | Order of battle |
| Oristano | Orcrist | Oriole |
| Original position | Organ transplant | Orchard |
| Orrin Hatch | Orleans (band) | Ordinate |
| Orchestral Manoeuvres in the Dark | Ordered group | Ornament and Crime |
| Organic reaction | Orange Walk Town | Orange Walk District |
| Orkney Single Malts | Orthogonal group | Orlando Furioso |
| Orp-Jauche | Orient Express | Oreye |
| Orwo | Orion Nebula | Organic food |
| Order-in-Council | Orkdal | Organisation for Economic Co-operation and Development |
| Ordono I of Asturias | Orange Free State | Orange River |
| Orillia, Ontario | Organizational commitment | Oriental and India Office Collections |
| Orgy (band) | Orange-headed Thrush | Orlande de Lassus |
| Origins International Game Expo | Orientability | Orology |
| Oroogu programming language | Oriental Telephone Company | Organology |
| Organic light-emitting diode | Orange River Colony | Origami tech tree |
| Ore Mountains | Orthonormal matrix | Orthonormality |
| Orthonormal basis | ORDVAC | ORACLE |
| Organisation Todt | Orthogonalization | Oruro, Bolivia |
| Orleanist | Orthographic projection | Orbital (band) |
| Orders of magnitude (length) | Orders of magnitude (time) | Orders of magnitude (area) |
| Orders of magnitude (mass) | Orders of magnitude (volume) | Orbital speed |
| Oracle Encyclopædia | Orfeo Bartolini | Orthanc |
| Orange Order | Order of the British Empire | Orthodox Church of Constantinople |
| Order of operations | Orlando W. Wilson | Order of precedence |
| Organic gardening | Ormus | Orphée |
| Organized Konfusion | Orange Prize for Fiction | Orchidales |
| Ornamental | Orsanmichele | Orion Pictures Corporation |
| Orchomenus (town) | Orvieto | Orang Pendek |
| Orientable manifold | Orchidometer | Orsa Spelmän |
| Organizational development | Orange Coast College | Organizational learning |
