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Columbia Encyclopedia

Columbia Electronic Encyclopedia, published by Columbia University Press
The Columbia Electronic Encyclopedia contains entries on people, places, events, historical facts and terms, with bibliographies for further reading.
On this page: Ordu to ormolu.
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Title Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9
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Ordu (city, Turkey)
ore (mineral)
Örebro (city, Sweden)
oregano (herb, plant)
Oregon (state, United States)
Oregon (city, Oregon)
Oregon State University (university, Oregon)
Oregon Trail (road, United States)
Oregon, University of (university, Oregon)
Orekhovo-Zuyevo (city, Russia)
Orel (city, Russia)
Orem (city, Utah)
Orenburg (city, Russia)
Oreopithecus (in zoology, history)
Oreor (island, Palau)
Orestes (Roman general)
organic chemistry (branch of chemistry)
organic farming (in agriculture)
Organization for Security and Cooperation in Europe (international organization, Europe)
Organization of African Unity (international organization, Africa)
organum (in music)
oriel (part of structure)
Orientale (province, Zaire)
orientation (in architecture)
original sin (in Christianity)
Orillia (city, Canada)
Orinoco (river, Venezuela)
oriole (bird)
Orion (in Greek mythology)
Orion Nebula (in astronomy)
Orissa (state, India)
Oriya (language)
Orizaba (city, Mexico)
Orkhon (river, language, Mongolia)
Orkney Islands (former region, island group, Scotland)
Orlando (city, Florida)
Orléanais (region, former province, France)
Orléans (Rock Band, '70s-2000s)
Orléans (city, France)
Orléans, Île d' (island, Canada)
Orlon (in textile)
Orly (city, France)
ormolu (in metallurgy)