All articles starting with O
9,097 articles
OMat24
OMat24 (Open Materials 2024) is an open dataset of over 110 million density functional theory calculations on inorganic materials, released by Meta's FAIR group in October 2024.
Omaveloxolone
Omaveloxolone (Skyclarys, RTA 408) is a semisynthetic oleanane triterpenoid Nrf2 activator, the first drug approved for Friedreich's ataxia (FDA 2023, EU 2024), dosed 150 mg once daily.
OMAX (company)
OMAX Corporation is an American manufacturer of abrasive waterjet cutting systems based in Kent, Washington. Founded in 1993, it has been a wholly owned subsidiary of Hypertherm Associates since 2019.
Omayed Biosphere Reserve
Omayed Biosphere Reserve, a UNESCO MAB site in Egypt's Mediterranean coastal desert designated in 1981, covering 75,800 ha with five habitat types, Bedouin communities, and severe dune loss from irrigation-driven land conversion.
Omayra Sánchez
Omayra Sánchez Garzón was a 13-year-old girl from Armero, Colombia, who died in November 1985 after roughly 60 hours trapped in debris from the Nevado del Ruiz lahar.
Ombak KLCC
Ombak KLCC is a retail, art and lifestyle destination in Kuala Lumpur's KLCC precinct, opened 21 August 2026 by KLCC Holdings, anchoring the relocated GALERI PETRONAS gallery.
Omben
Omben (Minuman in Indonesian) is a two-player Indonesian fishing card game related to Go Fish, played with 52 cards; a failed request forces the asker to draw until the requested rank appears, and the first to empty their hand wins.
Ombilin Coal Mining Heritage of Sawahlunto
Ombilin Coal Mining Heritage of Sawahlunto, a UNESCO World Heritage Site since 2019, is a serial Dutch colonial industrial ensemble in West Sumatra: mines, company town, 155 km rack railway, and Emmahaven port, worked partly by convict orang rantai labour.
Ombinskoye Oil Field
Ombinskoye Oil Field (Омбинское месторождение) is an onshore oil field near Nefteyugansk in western Siberia, Russia, discovered in 1978, developed by Rosneft's RN-Yuganskneftegaz, with reserves of about 247 million barrels.
Ombitasvir
Ombitasvir (ABT-267), also in Viekira Pak, Viekirax, and Technivie, is an AbbVie HCV NS5A inhibitor with picomolar, pan-genotypic potency, used with paritaprevir/ritonavir and dasabuvir; EU marketing authorization withdrawn in 2024.
Ombos (crater on Ganymede)
Ombos, formerly Ombos Facula, is a 177 km IAU-approved impact crater on Jupiter's moon Ganymede at 4.75°N, 236.16°W, interpreted as a multiring-like basin with a bright central plain of refrozen impact melt.
Ombrabulin
Ombrabulin (AVE8062, AC-7700), a Sanofi water-soluble combretastatin A4 analogue vascular disrupting agent, binds endothelial tubulin to collapse tumor vessels; discontinued after failed sarcoma, NSCLC, and ovarian trials.
Ombré
Ombré, from French for "shaded," is a gradation of one color from light to dark in dyed, woven, or printed textiles, wallpaper, and paint; distinct from variegated multi-color effects.
Ombrotrophic
Ombrotrophic describes a peatland, typically a bog, that receives all its water and dissolved nutrients from rain and snow, with no groundwater or runoff from mineral soil.
Ombudsman
An ombudsman is a public official, appointed by a legislature, who investigates complaints from individuals against government administrative acts; the office originated in Sweden in 1809.
OMC (band)
OMC (Otara Millionaires Club) was a New Zealand act built around singer Pauly Fuemana and producer Alan Jansson, whose 1995 single "How Bizarre" topped charts worldwide, sold over 1.5 million albums, and became the biggest-selling New Zealand record.
Omdia
Omdia is a global technology market research and advisory firm headquartered in London, formed in 2020 from Ovum, Heavy Reading, Tractica, and most of IHS Markit's technology research.
Omdurman
Omdurman (أم درمان) is Sudan's largest city by the 2008 census, on the west bank of the Nile opposite Khartoum. Mahdist State capital 1885–1898, site of Kitchener's 1898 battle, and a major battleground of the Sudan war since 2023.
Ome Railway Park
Ome Railway Park (青梅鉄道公園), Ome, Tokyo; open-air JR East railway museum opened 1962 for the 90th anniversary of Japanese railways; 13 vehicles including a British-built 1872 No. 3 locomotive, D51, and enterable 0 series Shinkansen cab; reopened March 2026.
ome Ser
ome Ser (Omega Serpentis, ω Serpentis) is a G8 III giant star in Serpens about 76.8 parsecs away with a confirmed gas giant planet, ome Ser b, found by radial velocity in 2013, plus a companion star ome Ser B.
Omecamtiv mecarbil
Omecamtiv mecarbil (AMG 423, CK-1827452, Kinharto) is a selective cardiac myosin activator for HFrEF that boosts sarcomere contractility without raising calcium or oxygen use; GALACTIC-HF showed HR 0.92, but EMA rejected approval in 2024.
Omeciuatl Corona
Omeciuatl Corona is a 175-km-diameter corona on Venus at 16.5N, 119.0E in Niobe Planitia quadrangle V-23, IAU-approved 1994, named for an Aztec generative power; a circular low with a 600-700-m-deep basin north of Bhumiya Corona.
Omeed Malik
Omeed Malik is an American financier who runs 1789 Capital, an "America First" investment firm, and previously headed hedge fund advisory at Bank of America Merrill Lynch.
Omega
Omega (Ω, ὦ μέγα) is the 24th and final Greek letter, an Ionic invention formed by breaking the O to write the long vowel /ɔː/. One of the Greek additions to the Phoenician alphabet, it entered the standardized Attic script in 403 BC and now symbolizes the ohm.
Omega (prison gang)
Omega is a monoethnic Malay Muslim prison gang formed in Singapore prisons in the late 1980s, the most significant Malay secret society in post-independence Singapore, which evolved from a prison protection group into a transnational drug-trafficking enterprise.
Omega Canis Majoris
Omega Canis Majoris (ω CMa) is a bright Be star of type B2 in Canis Major, about 923 light-years away and a standard reference object for Be-star studies.
Omega Centauri
Omega Centauri (ω Cen) is the brightest, most massive globular cluster of the Milky Way, about 10 million stars 17,700 light-years away, likely a stripped dwarf galaxy nucleus.
Omega El Fuerte
Omega El Fuerte, born Antonio Peter de la Rosa in 1979, is a Dominican singer who leads Omega y Su Mambo Violento and pioneered merengue urbano.
Omega equation
The omega equation is a diagnostic equation of quasi-geostrophic theory that determines vertical velocity in synoptic-scale atmospheric flow from geostrophic wind, pressure, and temperature fields, without time derivatives.
Omega Force (オメガフォース)
Omega Force (オメガフォース, ω-Force) is Koei Tecmo's internal studio, founded 1996, creator of the Dynasty Warriors and Samurai Warriors musou games (over 42 million sold) and licensed titles like Hyrule Warriors and Attack on Titan.