All articles starting with U
6,146 articles
USA Today
USA Today: national US daily newspaper founded September 15, 1982 by Al Neuharth at Gannett, known for color, graphics, and short articles; flagship of USA TODAY Co. (formerly Gannett, NYSE: TDAY).
USA Weightlifting
USA Weightlifting (USAW) is the nonprofit National Governing Body for weightlifting in the United States, serving about 21,600 members and sanctioning 554 local competitions in 2025.
USA: Land of Opportunities
USA: Land of Opportunities is an unfinished film trilogy by Lars von Trier about American society, planned from the start as Dogville (2003), Manderlay (2005), and Washington.
USAA
USAA, formally the United Services Automobile Association, is a San Antonio-based financial services group offering insurance, banking, and life insurance exclusively to the US military community.
Usability
Usability, also known as ease of use or user-friendliness, is the extent to which users can achieve goals with a product effectively, efficiently, and with satisfaction.
Usability testing
Usability testing, also known as user testing, is an evaluation method in which researchers observe real users performing realistic tasks with a product or prototype to identify usability problems.
Usabilla
Usabilla was an Amsterdam-based software company, founded by Paul Veugen in 2009, that sold website, app, and email feedback tools to enterprises and was acquired by SurveyMonkey in 2019.
Usada Pekora
Usada Pekora (兎田ぺこら) is a hololive 3rd Generation VTuber who debuted July 17, 2019; known for the "peko" tic, Minecraft's Usada Kensetsu, top female streamer rankings, a Death Stranding 2 cameo, and the album Usagi the MEGAMI!!.
Usage share of operating systems
Usage share of operating systems, also called OS market share, estimates what percentage of devices or web traffic runs each operating system, measured mainly through web analytics.
Usage share of web browsers
Usage share of web browsers, also called browser market share, is the fraction of measured web activity attributed to each browser; Chrome led worldwide in July 2026 at 68.22%.
Usage-based billing
Usage-based billing, also known as metered or consumption-based billing, is a pricing model where customers pay according to how much of a product or service they use.
Usagi Yojimbo (兎用心棒)
Usagi Yojimbo, Japanese for rabbit bodyguard, is an American comic series by Stan Sakai begun in 1984, following a rabbit ronin in early seventeenth-century Japan.
USAID in the second Trump administration
USAID in the second Trump administration: the 2025 freeze and dismantling of the U.S. Agency for International Development under Executive Order 14169, Rubio's June 2025 termination of its programs, staff cuts from 13,600 to 241, and resulting litigation and humanitarian impact.
Usain Bolt
Usain Bolt, Jamaican sprinter born 1986, "Lightning Bolt", retired 2017; holds 100 m (9.58) and 200 m (19.19) world records, won 8 Olympic golds and 11 world titles.
USAir Flight 1016
USAir Flight 1016 was a DC-9 flight from Columbia, South Carolina, that crashed near Charlotte on July 2, 1994, in a microburst, killing 37 of 57 aboard.
USAir Flight 427
USAir Flight 427 was a scheduled flight from Chicago-O'Hare to Pittsburgh that crashed while landing on September 8, 1994, killing all 132 people aboard; the NTSB blamed a rudder reversal.
Uşak
Uşak (Temenothyrea) is a province in Inner West Anatolia, Turkey, area 5,341 km², capital of the same name. Occupied by Greece 1920–1922, it became a province in 1953 under Law No. 6129.
Uşaklı Höyük
Uşaklı Höyük is a multi-period settlement mound in Yozgat Province, central Turkey, tentatively identified with the Hittite cult city of Zippalanda and excavated by an Italian-Turkish mission since 2008.
Usama ibn Munqidh
Usama ibn Munqidh (أسامة بن منقذ) was an Arab poet, warrior, and courtier from Shaizar who fought the Crusaders from 1095 to 1188 and wrote the memoir Kitab al-I'tibar.
Usama ibn Zayd
Usama ibn Zayd (أسامة بن زيد) was a companion of Muhammad, son of Zayd ibn Haritha, appointed at about 18 to command Muhammad's final expedition, to Syria in 632.
Usan oil field
The Usan oil field is a deepwater oil field in the eastern Niger Delta, offshore Nigeria, discovered in 2002 and producing since 2012, today operated by ExxonMobil.
Usaquén
Usaquén is the northernmost and first-numbered of Bogotá's 20 localities, Colombia. Founded as Santa Bárbara de Usaquén around 1539, it was annexed in 1954 and known for its flea market.
USArray
USArray is a continental-scale seismic observatory and component of NSF's EarthScope program, funded in 2003 to record earthquakes and image the structure beneath North America with dense seismograph networks.
USATC S100 Class
The USATC S100 Class is a class of 0-6-0 tank steam switchers designed by the United States Army Transportation Corps for Europe and North Africa during World War II.
USATC S160 Class
The USATC S160 Class is an American 2-8-0 heavy freight steam locomotive designed in 1942 for the United States Army Transportation Corps, with around 2,120 built by 1945.
USB
USB (Universal Serial Bus) is an industry standard for connecting and powering peripherals over a cable, introduced in 1996 and now spanning data rates from 1.5 Mbit/s to 80 Gbps.
USB 3.0
USB 3.0, also known as SuperSpeed USB, is the third major version of the Universal Serial Bus standard, released in 2008 with a 5 Gbps rate.
USB Attached SCSI
USB Attached SCSI (UAS) is a computer storage protocol that carries SCSI command sets over USB, enabling command queuing and faster transfers than the older bulk-only protocol.
USB flash drive
A USB flash drive, also known as a thumb drive or pen drive, is a portable solid-state storage device combining NAND flash memory and a controller with a USB connector.
USB hardware
USB hardware is the physical layer of the Universal Serial Bus, comprising connectors, cables, host controllers, hubs, and devices, with data rate, connector type, and power delivery specified independently.