All articles starting with O
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Olly Alexander
Olly Alexander (Oliver Alexander Thornton, born 1990), British singer and actor, lead vocalist of Years & Years, star of It's a Sin, UK Eurovision 2024 entry with 'Dizzy', and solo artist whose debut album Polari was released February 2025.
Olly Murs
Olly Murs (Oliver Stanley Murs, born 1984, Witham, Essex) is a British pop singer and TV presenter, X Factor 2009 runner-up, with 4 UK No. 1 singles, 5 No. 1 albums including Marry Me, and The Voice UK coaching role.
Olly olly oxen free
Olly olly oxen free, also spelled Ollie ollie oxen free, is a catchphrase in children's games like hide and seek, shouted so out or hiding players can come in free.
Olly Rix
Olly Rix (Oliver Rix, born 1985) is a British actor, LAMDA-trained and an RSC Cardenio debutant, known for Matthew Aylward in Call the Midwife, Edward Stafford in The Spanish Princess, and Flynn Byron in Casualty from 2025.
Olly Sanderson
Olly Sanderson (Oliver Sanderson, born 2003) is an English striker who spent 14 years in Fulham's academy, had loans at Oxford City, Sutton United, Bradford City, Harrogate Town and Woking (17 goals in 40 National League games in 2025-26), and joined Stevenage permanently in June 2026.
Olm
The olm (Proteus anguinus), also called the human fish, is a blind, pale aquatic salamander of the Dinaric Karst caves in Slovenia, Croatia, Bosnia, and Italy.
Olmec colossal heads
Olmec colossal heads: 17 monumental basalt portrait heads, likely of rulers, from San Lorenzo (10), La Venta (4), Tres Zapotes (2), and Cobata (1), some recarved from thrones.
Olmec jade working
Olmec jade working is the craft of the Olmec civilization of Mexico's Gulf Coast, which carved jadeite into figurines, masks, and celts from about 1200 to 400 BCE.
Olmecs
The Olmecs, earliest major Mesoamerican civilization (ca. 1450–400 BC) of the Gulf Coast lowlands of Veracruz and Tabasco, centered on San Lorenzo, La Venta, and Tres Zapotes, known for colossal basalt heads, jade offerings, and the mother-culture debate.
Olmesartan
Olmesartan (Benicar) is an angiotensin II receptor blocker prodrug (olmesartan medoxomil) approved in the US in 2002 for hypertension; known for 24-hour BP lowering, sprue-like enteropathy risk, and ROADMAP and SUPPORT trial findings.
Olmo (film)
Olmo is a 2025 coming-of-age comedy-drama by Fernando Eimbcke and Vanesa Garnica, a US-Mexico Plan B/Teorema film set in 1979 New Mexico, premiered at Berlinale Panorama, released by Greenwich in 2026.
OLMo (model family)
OLMo is a family of fully open large language models from the Allen Institute for AI (AI2), first released in February 2024 with weights, training data, and code published.
Olmstead v. United States
Olmstead v. United States, 277 U.S. 438 (1928), Taft Court decision holding warrantless wiretapping without physical trespass was not a Fourth Amendment search; 5-4 ruling with influential Brandeis dissent, overruled by Katz v. United States in 1967.
Olmsted County
Olmsted County, Minnesota: southeastern Minnesota county established February 20, 1855, named for David Olmsted; county seat Rochester, home of Mayo Clinic; population 162,847 (2020), seventh largest of Minnesota's 87 counties.
Olmsted Locks and Dam
Olmsted Locks and Dam is a US Army Corps navigation complex on the Ohio River near Olmsted, Illinois, opened in 2018 at a cost of about $3 billion.
Olmutinib
Olmutinib (BI 1482694, HM61713, brand Olita) is an oral, irreversible, mutant-selective third-generation EGFR tyrosine kinase inhibitor for T790M-positive NSCLC, approved in South Korea in 2016 but discontinued after fatal skin toxicity and inferior results versus osimertinib.
Olo (company)
Olo is an American software-as-a-service company founded by Noah Glass that provides restaurants with digital ordering, delivery dispatch, and payment processing; it was acquired by Thoma Bravo in 2025.
Olodaterol
Olodaterol (Striverdi Respimat) is a once-daily long-acting beta2-agonist inhalation bronchodilator by Boehringer Ingelheim for COPD maintenance, 5 µg via Respimat; also combined with tiotropium as Stiolto/Spiolto Respimat; not indicated for asthma.
Olodum
Olodum is an Afro-Bahian percussion group and bloco afro founded in Salvador, Bahia, in 1979, creator of samba-reggae and known for recordings with Paul Simon and Michael Jackson.
Olof Dreijer
Olof Dreijer is a Swedish music producer and DJ, one half of electronic pop group The Knife with his sibling Karin Dreijer, and a solo artist since 2023.
Olof Hammarsten
Olof Hammarsten (1841–1932) was a Swedish physician and chemist, professor of physiological chemistry at Uppsala, who showed casein was the first phosphoprotein and chaired the Nobel chemistry committee.
Olof Hanner
Olof Hanner (1922–2015) was a Swedish mathematician, professor at the University of Gothenburg from 1963 to 1989, known for the Hanner inequality and Hanner polytopes.
Olof Mellberg
Olof Mellberg, full name Erik Olof Mellberg, is a Swedish former footballer and current coach who captained Aston Villa and won 117 caps for Sweden between 2000 and 2012.
Olof Nyrén
Olof Nyrén is a Swedish physician and cancer epidemiologist, Professor Emeritus at Karolinska Institutet, known for NEJM studies linking gastroesophageal reflux to esophageal adenocarcinoma and a 1986 trial on non-ulcer dyspepsia.
Olof Palme
Olof Palme (1927–1986), Swedish Social Democratic prime minister 1969–1976 and 1982–1986, assassinated in Stockholm on 28 February 1986; the murder investigation was closed in 2020 and remains unresolved.
Olof Stahre
Olof Stahre (Nils Olof Stahre, 1909–1988), Swedish eventing rider on horse Komet; Olympic team gold at Helsinki 1952 and team silver at London 1948, later trainer of Petrus Kastenman. Not the football coaches Mikael, Janne, or Otto Stahre.
Olof Thorin
G. Olof Thorin (1912–2004) was a Swedish mathematician who spent his career as an insurance actuary, never at a university, and proved the Riesz–Thorin interpolation theorem, still standard teaching material.
Olof Thunberg
Olof Thunberg (Fritz-Olof Thunberg), Swedish actor and director (1925–2020), grandfather of Greta Thunberg; narrator of Bamse, Swedish voice of Shere Khan, radio's Mannen i svart.
Olof van der Meulen
Olof van der Meulen (Roelof Antonius van der Meulen, born 1968, Sneek) is a Dutch volleyball opposite hitter, 202 cm, with 255 caps; Olympic silver 1992 Barcelona and gold 1996 Atlanta, European champion 1997, later a coach.
Olokizumab
Olokizumab (OKZ, CDP6038), a humanized anti-IL-6 monoclonal antibody blocking the gp130 Site 3 epitope, developed by UCB Pharma and R-Pharm, approved in Russia for rheumatoid arthritis.