All articles starting with O
9,097 articles
Ostrakine
Ostrakine, also Ostracine, was an ancient town on the Mediterranean coast of northern Sinai, identified with al-Filusiyya on the Bardawil lagoon, attested from the 1st century BCE to the 7th century CE.
Ostrava
Ostrava, Czech statutory city and Moravian-Silesian Region capital, third largest Czech city by area and population; former coal and steel center, now services, universities, and Dolní Vítkovice industrial heritage.
Ostrea
Ostrea (Linnaeus, 1758) is the type genus of true oysters, family Ostreidae, including the European flat oyster O. edulis and Olympia oyster O. lurida; its species brood eggs in the pallial cavity, and molecular work shows the genus is paraphyletic.
Ostrea edulis
Ostrea edulis, the European flat oyster or native oyster, is a reef-building bivalve native from Norway to Morocco and the Black Sea, now collapsed across most of its range from overfishing and Bonamia disease, and the target of European restoration programs.
Ostreid herpesvirus 1
Ostreid herpesvirus 1 (OsHV-1), including the µVar microvariant, is a dsDNA herpesvirus of bivalves causing Pacific oyster mortality syndrome, mass mortalities of Crassostrea gigas spat above 16 °C water since 2008; not zoonotic.
Ostreidae molecular phylogenetics
Molecular phylogenetics of the oyster family Ostreidae reconstructs evolutionary relationships among its roughly 88 extant species, revealing that traditional shell-based genera like Ostrea and Crassostrea are not natural groups.
Ostrich
The ostrich (Struthio camelus) is a large flightless bird native to African grasslands and savannas, the tallest and heaviest living bird, able to sprint at 69 km/h.
Ostriv Rozvah (Island of Entertainment)
Острів Розваг (Island of Entertainment): Ukrainian family entertainment brand; Zhytomyr indoor park opened 2012 in TRC Global UA, over 3,000 m²; trademark 174580; LLC Ostriv Rozvah, USREOU 38923806, Kyiv; also a Kremenchuk venue.
Ostrobothnia (administrative region)
Ostrobothnia (Österbotten, Pohjanmaa) is a west-coast region of Finland with about 179,500 inhabitants, fourteen municipalities, Vaasa and Jakobstad as main cities, a Swedish-speaking majority, and an energy technology cluster.
Ostrog Bible
The Ostrog Bible (Острожская Библия) is the first complete printed Bible in Church Slavonic, printed by Ivan Fedorov at Ostrog in 1581 and containing 76 books.
Ostrog Monastery (Манастир Острог)
Ostrog Monastery (Манастир Острог) is a Serbian Orthodox monastery built into a cliff of Ostroška Greda near Nikšić, Montenegro, founded around Saint Basil of Ostrog in the 17th century, with cave churches of the Holy Cross (1665) and the Presentation holding his relics.
Ostrogorski's paradox
Ostrogorski's paradox is a social choice result from Ostrogorski's 1902 Democracy and the Organization of Political Parties: voting by party platform, the party losing every issue can win the election, as in the 5-voter, 3-issue example.
Ostrogothic Kingdom
The Ostrogothic Kingdom (493–553) was the Gothic state in Italy founded by Theodoric the Great after killing Odoacer at Ravenna; it preserved Roman administration until Justinian's Gothic War destroyed it.
Ostrogozhsk-Belousovo Gas Pipeline
The Ostrogozhsk-Belousovo Gas Pipeline is a trunk natural gas pipeline in Russia, running from Ostrogozhsk in Voronezh Oblast to Belousovo in Kaluga Oblast, commissioned in 1965 and owned by Gazprom.
Ostrogozhsk-Shebelinka Gas Pipeline
The Ostrogozhsk-Shebelinka Gas Pipeline (Russian: газопровод "Острогожск-Шебелинка") is a 312 km mainline natural gas pipeline from Ostrogozhsk, Russia, to Shebelinka, Ukraine, first commissioned in 1961 and now mothballed.
Ostroh Academy
Ostroh Academy (Острозька академія) was a school of higher learning founded in 1576 in Ostroh, Volhynia, by Prince Vasyl-Kostiantyn Ostrozky, the first on Ukrainian lands.
Ostrov
Ostrov, a commune in Constanța County, Romania, holds the Roman civil settlement of Durostorum at Ferma 4 and the Byzantine island fortress Păcuiul lui Soare; other Ostrov place names exist in Latvia, Czechia, and Russia.
Ostrov (Martian crater)
Ostrov is a 73-km-diameter impact crater on Mars at 26.53S, 331.80E, an IAU-approved name in the USGS Gazetteer, imaged by HiRISE stereo and Mars Odyssey false color.
Ostrov Bel’kovskiy
Ostrov Bel'kovskiy (Belkovsky Island, Остров Бельковский) is the westernmost of the Anzhu Islands in the New Siberian Islands, Russia, west of Kotelny across the Strait of Zarya; uninhabited tundra up to 127 m with walrus haulouts and Permian-Triassic trap magmatism.
Ostrov Bol’shevik
Ostrov Bol'shevik (остров Большевик), Bolshevik Island, is the southernmost, second-largest island of Severnaya Zemlya, Russia: about 11,300 km², 935 m high, ~30% glaciated, separated from Taymyr by Vilkitsky Strait, with accelerating glacier retreat and Cape Baranov research station.
Ostrov Bol’shoy Shantar
Bolshoy Shantar (Большой Шантар) is the largest island of the Shantar archipelago in the western Sea of Okhotsk, Khabarovsk Krai, Russia; about 1,790 km², with brackish Lake Bolshoe, Yakshina Bay meteorological station, and inclusion in Shantar Islands National Park since 2013.
Ostrov Gallya
Ostrov Gallya (Остров Галля, Hall Island) is the fifth largest island of Franz Josef Land, Russia, about 1049-1200 km², 93.8% glacier-covered, highest point 502 m, discovered 1874 by the Austro-Hungarian Tegetthoff expedition.
Ostrov Gukera
Ostrov Gukera (остров Гукера, Hooker Island) is an island in the Franz Josef Land archipelago, best known for Bukhta Tikhaya, the first Soviet polar station on the archipelago, opened in 1929.
Ostrov Kamenka
Ostrov Kamenka (Остров Каменка), also rendered Ostrov Kamenka-Sar, is an inhabited island in western Lake Pskov in Pechorsky District, Pskov Oblast, northwestern Russia, part of a protected natural monument designated in 2007.
Ostrov Matar
Ostrov Matar (остров Матар) is a small uninhabited island in the Anzhu Islands of the New Siberian archipelago, East Siberian Sea, Yakutia, Russia; about 8 km², 5 km long, near Bunge Land and Zheleznyakov Island.
Ostrov Mezhdusharskiy
Ostrov Mezhdusharskiy (Остров Междушарский), also Mezhdusharski, is the third largest island of Russia's Novaya Zemlya archipelago, 742 km², in the Barents Sea west of Yuzhny Island, separated by Kostin Shar strait.
Ostrov Oleniy
Ostrov Oleniy (Остров Олений, "Deer Island") is the name of several separate islands in Russia, the largest lying in the southern Kara Sea off Siberia's Gyda Peninsula.
Ostrov Pioner
Ostrov Pioner (Остров Пионер, Pioneer Island) is an uninhabited 1,527 km² island in northwestern Severnaya Zemlya, Kara Sea, Krasnoyarsk Krai, Russia; highest point 385 m, discovered by Ushakov and Urvantsev in 1930–32.
Ostrov Severnyy
Ostrov Severnyy (Остров Северный), or Severny Island, is the northern of the two large islands of Novaya Zemlya in the Russian Arctic, belonging to Arkhangelsk Oblast.
Ostrov Sibiryakova
Ostrov Sibiryakova (Остров Сибирякова), or Kuz'kin Island, is an ~800 km² flat tundra island in the southern Kara Sea at the entrance to the Yenisei Gulf, Krasnoyarsk Krai, named by Nordenskiöld in 1878 and part of the Great Arctic Reserve.