All articles starting with U

Urjit Patel (ઉર્જિત પટેલ)

Urjit Patel (ઉર્જિત પટેલ) is an Indian economist who was the 24th Governor of the Reserve Bank of India from 2016 to 2018, resigning before the end of his term.

Oct 22, 2026

Urjuza

The urjuza (الأرجوزة, plural arājīz) is a classical Arabic poem in the rajaz meter, whose light rhythm made it the standard vehicle for memorizing grammar, law, and medicine.

Urkesh

Urkesh was a third-millennium BC Hurrian city at Tell Mozan near Qamishli in northeastern Syria, seat of Hurrian kings and home of the god Kumarbi, excavated by the Buccellatis since 1984.

Urkuk Dorsa

Urkuk Dorsa, a 600 km ridge (dorsum) on Venus at 12S 320E, IAU-approved 1997, named for a Nivkhi (Sakhalin Island) night maiden; distinct from the smaller Unuk Dorsa.

URL

A URL, or Uniform Resource Locator, is the address of a unique resource on the internet, also called a web address, used by browsers to retrieve pages and images.

Sep 19, 2026

URL (Ultimate Rap League)

The Ultimate Rap League (URL) is an American battle rap league founded by Smack White in New York in 2009, widely seen as the sport's leading league.

URL redirection

URL redirection, also known as URL forwarding or an HTTP redirect, sends a request for one web address onward to a new location, using 3xx status codes.

URL shortening

URL shortening, also called link shortening, maps a long web address to a short code that redirects visitors, fitting links into posts, print, and QR codes.

URL Standard

The URL Standard is a WHATWG Living Standard, first drafted in 2012, that defines URL parsing and serialization and the JavaScript URL and URLSearchParams APIs used by browsers.

URLLC, or ultra-reliable low-latency communication, is one of three 5G service categories defined by the ITU, targeting about 1 ms latency and above 99.99% reliability for applications like industrial automation and autonomous vehicles.

URM1

URM1 (ubiquitin-related modifier 1) is a non-canonical ubiquitin-like protein that acts both as a protein modifier (urmylation) and as the sulfur donor for tRNA wobble uridine thiolation via its E1-like enzyme Uba4, marking it as a molecular fossil linking UBLs and sulfur-carrier proteins.

Sep 27, 2026

Urmas Paet

Urmas Paet, born 1974, in Tallinn, is an Estonian Reform Party politician who has been a Member of the European Parliament since 2014 and serves as Vice-Chair of its foreign affairs committee.

Urmia power station

Urmia power station, also known as the Urmia Combined-Cycle Power Plant, is a gas-fired power station in Urmia, Iran, with a capacity of about 1,500 MW.

Urmia University of Medical Sciences

Urmia University of Medical Sciences (دانشگاه علوم پزشکی ارومیه, UMSU), public medical university in Urmia, West Azerbaijan, Iran; faculty founded 1977, university 1985; 7-year Persian MD and English MBBS; THE 2025 band 601-800.

Urmila (ऊर्मिला)

Urmila (ऊर्मिला) is a princess of Mithila in the Ramayana, wife of Lakshmana and younger sister of Sita. Valmiki names her once; her famous fourteen-year sleep comes from Telugu women's songs, and modern retellings like Saket and Sita's Sister center her.

Urmila Matondkar (उर्मिला मातोंडकर)

Urmila Matondkar (उर्मिला मातोंडकर), Indian actress and politician born 1974 in Mumbai, star of Rangeela, Satya, Bhoot, and Pinjar; Congress 2019 Mumbai North candidate, later Shiv Sena MLC nominee.

Urmila Matondkar filmography

Urmila Matondkar filmography: screen credits of the Indian actress (born 1974), from child roles in Kalyug and Masoom to Rangeela, Satya, Bhoot, Pinjar, and her last film appearance, Blackmail (2018).

Oct 22, 2026

Urnayr

Urnayr, also written Ur'nayr (Armenian: Ուռնայր), was a 4th-century king of Caucasian Albania remembered for making Christianity the official religion and for fighting as an ally of the Sasanian king Shapur II in the Roman-Persian wars.

Urnenskoye oil field

The Urnenskoye oil field (Урненское) is an operating onshore oil field in Uvat District, Tyumen Region, western Siberia, Russia, producing since 2009 and operated by Rosneft's RN-Uvatneftegaz.

Urnfield culture

Urnfield culture (Urnenfelderkultur), Late and Final Bronze Age Central European culture, c. 1300–800 BCE, defined by cremation burials in urns in field cemeteries; preceded the Hallstatt culture and debated as Proto-Celtic.

URO Mentor

URO Mentor is a high-fidelity virtual reality simulator for endourological surgery developed by Simbionix of Lod, Israel, for training and assessment in ureteroscopy, cystoscopy, and percutaneous renal access.

Urobilinogen

Urobilinogen (尿胆素原) is a colorless tetrapyrrole formed when gut bacteria reduce bilirubin; about 20% is reabsorbed and excreted in urine as urobilin, making urine levels a dipstick screen for hemolysis, hepatitis, and biliary obstruction.

Urocanase, Rossmann-like domain

Urocanase, Rossmann-like domain (IPR035085, Pfam PF01175): the NAD+-binding Rossmann-like fold of urocanase (EC 4.2.1.49), second enzyme of histidine degradation, where NAD+ acts as an electrophile.

Urocanic aciduria

Urocanic aciduria (urocanase deficiency, encephalopathy due to urocanase deficiency, OMIM 276880) is an extremely rare autosomal recessive histidine metabolism disorder caused by UROC1 deficiency, causing urinary urocanic acid with variable ataxia and intellectual deficit, often benign.

Urochloa

Urochloa (syn. Brachiaria) is a pantropical African-centred grass genus whose species, including U. brizantha, U. decumbens, U. humidicola, and U. ruziziensis, are major apomictic polyploid tropical pasture forages covering over 100 million hectares in Brazil.

Oct 20, 2026

Urochloa brizantha

Urochloa brizantha, long known as Brachiaria brizantha and commonly called palisade grass, is a perennial tropical forage grass native to Africa, widely cultivated as pasture, especially in Brazil.

Oct 20, 2026

Urocitellus

Urocitellus (Holarctic ground squirrels), genus of 12 burrowing squirrel species split from Spermophilus in 2009; mostly North American, includes Arctic ground squirrel U. parryii and threatened U. brunneus.

Urocortin-2

Urocortin-2, also called urocortin II or stresscopin-related peptide, is a 38-amino-acid peptide of the corticotropin-releasing factor family, selective for the type 2 CRF receptor and studied for treating heart failure.

Urocyon

Urocyon, the gray foxes, is a genus of basal Western Hemisphere canids named by Baird in 1857, containing the gray fox (Urocyon cinereoargenteus) and island fox (Urocyon littoralis), the earliest-diverging living canid lineage, known for tree climbing.