All articles starting with U
6,146 articles
UNGG reactor
The UNGG reactor, short for uranium naturel graphite gaz, was a French gas-cooled power reactor design of the 1950s using natural uranium fuel and carbon dioxide coolant.
Ungli (उंगली)
Ungli (उंगली, "Finger") is a 2014 Hindi vigilante drama directed by Rensil D'Silva for Dharma Productions, starring Emraan Hashmi, Kangana Ranaut, Randeep Hooda, and Sanjay Dutt; released 28 November 2014, it flopped at the box office.
Ungnyeo
Ungnyeo (웅녀) is the she-bear who became a woman in the founding myth of Gojoseon and, by the god Hwanung, mother of Dangun Wanggeom, Gojoseon's legendary founder.
Ungoliant
Ungoliant, also called Gloomweaver or Ungoliante, is Tolkien's mysterious primeval spider-spirit who, allied with Melkor, destroyed the Two Trees of Valinor in Y.T. 1495, battled him over the Silmarils, and left descendants including Shelob; her origin and fate are unknown.
Ungulani Ba Ka Khosa
Ungulani Ba Ka Khosa is the pen name of Mozambican writer Francisco Esaú Cossa, born in 1957, whose debut novel Ualalapi (1987) is among the most influential works of modern African fiction.
Ungulate
Ungulate: hoofed mammals, traditionally the order Ungulata of even-toed Artiodactyla and odd-toed Perissodactyla. Molecular phylogenetics shows the group is polyphyletic; whales nest within artiodactyls (Cetartiodactyla), and Altungulata and Ungulata were invalidated.
Ungyu Paik
Ungyu Paik (백운규) is a South Korean materials scientist at Hanyang University known for battery anode research, who served as Minister of Trade, Industry, and Energy from 2017 to 2018.
Unha Pintada
Unha Pintada is the artistic name and band project of Brazilian singer Aldiran Santana from Simão Dias, Sergipe, a leading romantic arrocha performer whose career broke out in 2019.
Unhappily Ever After
Unhappily Ever After, an American WB sitcom (1995-1999) created by Ron Leavitt and Arthur Silver, follows divorced dad Jack Malloy, who talks to Mr. Floppy, a stuffed bunny voiced by Bobcat Goldthwait; 100 episodes, 5 seasons, a deliberate Married... with Children knockoff.
Unhappy Refrain (アンハッピーリフレイン)
Unhappy Refrain (アンハッピーリフレイン) is a 2011 Vocaloid song by wowaka featuring Hatsune Miku, posted to Niconico on May 2, 2011, and the title track of his first album on BALLOOM, which peaked at No. 6 on Oricon.
Unhappy triad
Unhappy triad (O'Donoghue triad, terrible triad): combined knee injury of ACL, MCL, and meniscus tear from valgus force with rotation; lateral meniscus now known more common than medial.
UNHCR Goodwill Ambassador
A UNHCR Goodwill Ambassador is a prominent public figure appointed by the UN refugee agency to advocate voluntarily and unpaid for refugees and displaced people.
Unheard (EP)
Unheard is a 2024 four-track EP by Irish singer-songwriter Hozier (Andrew Hozier-Byrne), released March 22 via Rubyworks. Its songs are Unreal Unearth offcuts tied to Dante's Inferno circles, and lead track Too Sweet became his first Billboard Hot 100 number one.
UnHerd
UnHerd: British digital news and opinion site founded July 2017 by Tim Montgomerie, owned by hedge fund billionaire Sir Paul Marshall. Heterodox, anti-establishment commentary; rated Center to Right-Center by bias raters.
UNHhhh
UNHhhh is a World of Wonder web series (2016-2023, eight seasons) starring drag queens Trixie Mattel and Katya Zamolodchikova improvising on one topic per episode against a green screen, with chaotic editing; it spawned a Viceland show and a podcast, and ended in 2025.
Unhinged (2020 film)
Unhinged is a 2020 American action thriller directed by Derrick Borte, in which a road-rage incident escalates into deadly revenge, starring Russell Crowe and Caren Pistorius.
Unhinged (video game)
Unhinged is a 2026 first-person horror game by Night School Studio (Oxenfree) released on Netflix June 30, 2026; the player's phone is controller, flashlight, and lifeline; stars Zoë Kravitz, Sadie Sink, Troy Baker.
Unholy (Sam Smith and Kim Petras song)
"Unholy" is a 2022 single by Sam Smith and Kim Petras, released 22 September 2022 as the lead single from Gloria. Written by seven writers, recorded in Jamaica, it topped the Billboard Hot 100 and UK chart and won the 2023 Grammy for Best Pop Duo/Group Performance.
Unholy Night (film)
Unholy Night (2026) is a Canadian Christmas horror-comedy, Michael Gabriele's feature debut, in which dead Italian relatives including a grandmother return as ritornati on Christmas Eve; it premiered at Fantasia 2026 and won the Gold Audience Award for Best Canadian Film. Distinct from the 1929 Barrymore film and the 2019 Chitaroni film of the same name.
Uni (Egyptian official)
Uni, also called Weni, was an Old Kingdom Egyptian official who served the Sixth Dynasty kings Teti, Pepi I, and Merenre around 2350–2288 BC, known from his long tomb inscription at Abydos.
Uni Dorsa
Uni Dorsa is an 800-km-long ridge (dorsum) on Venus at 33.7°N, 114.3°E, IAU-approved in 1985 and named for an Etruscan goddess equated with Hera or Juno.
UNI Global Union
UNI Global Union, formerly Union Network International, is a global union federation for service-sector workers, founded in 2000 and headquartered in Nyon, Switzerland, with 20 million members in 150 countries.
Uni Surf Team Rugen
Uni Surf Team Rügen (UST Rügen), water sports school and sports venue in Dranske on Rügen, Germany; founded 1985 by sport students, Dranske site 1993; windsurfing, kitesurfing, NoHotel hostel, bike rental on Wieker Bodden.
Uni-Mol
Uni-Mol is a family of 3D molecular representation learning models developed by DP Technology, first published at ICLR 2023. It handles property prediction, conformation generation, and protein-ligand binding pose prediction.
Uni-President Enterprises Corporation
Uni-President Enterprises Corporation (统一企业) is Taiwan's largest food company, founded in Tainan in 1967, which dominates instant noodles and operates 7-ELEVEN Taiwan through President Chain Store.
UniAD
UniAD (Unified Autonomous Driving) is an end-to-end autonomous driving framework introduced in December 2022 by OpenDriveLab at the Shanghai AI Laboratory, optimizing perception, prediction, and planning jointly for planning.
União dos Escritores Angolanos
The União dos Escritores Angolanos is an Angolan writers' association founded in Luanda in 1975, led first by Agostinho Neto and considered the first Angolan publishing house.
Uniaxial compression test
A uniaxial compression test compresses a material specimen along a single axis between two platens to measure compressive strength, yield strength, Young's modulus, and the stress–strain curve, and is used for metals, concrete, and rock.
Unibrow
Unibrow, or synophrys (monobrow), is fusion of the eyebrows at the midline above the nose. Usually a normal variation linked to PAX3; prized in antiquity, often removed in the modern West.
UNICA (Brazilian sugarcane industry association)
UNICA (União da Indústria de Cana-de-Açúcar e Bioenergia) is Brazil's sugarcane, ethanol, and bioenergy industry association, founded in 1997; its members produce over half the country's sugarcane.