| Urban I | Uralic languages | Urea |
| Uric acidUric acid is an organic compound of carbon, nitrogen, oxygen and hydrogen, with the formula C H N O It is a minor end-product of nitrogen metabolism in the human body (the main product being urea), and is found in small amounts in urine. In some other ani | UraniumUranium is a chemical element in the periodic table that has the symbol U and atomic number 92. A heavy, silvery-white, toxic, metallic , and naturally- radioactive element, uranium belongs to the actinide series and its isotope uranium-235 is used as the | Urban legendUrban Legend is also the name of a 1998 movie. Urban legends perpetrate a type of folklore, endlessly circulated by word of mouth, repeated in news stories and distributed by email. People frequently recount such tales as having happened to a "friend of a |
| Ursa MajorUrsa Major is a constellation visible throughout the year in the northern hemisphere. Its name means Great Bear in Latin, and is derived from the legend of Callisto. Its seven brightest stars form a famous asterism known in North America as the Big Dipper | Ursa MinorUrsa Minor is a constellation in the northern sky, the name of which means "Smaller Bear" in Latin. It is one of the 88 modern constellations, and was also one of the 48 listed by Ptolemy. It is notable as the location of the north celestial pole, althoug | UruguayThe Eastern Republic of Uruguay (translated from the Spanish Republica Oriental del Uruguay , is a country in southern South America, bordered by Brazil to the north, the Uruguay River to the west, the estuary of the Rio de la Plata (River Plate) to the s |
| UranusUranus can refer to many things: In Greek mythology, Ouranos is the ancient deity of the heavens, the earliest supreme god. Uranus is the Latin name of Ouranos. Uranus is the seventh planet from the Sun, and is named after the Roman god. Uranus is a film | Ursula K. Le GuinUrsula Kroeber Le Guin (born October 21, 1929), is an American author. While she has written novels, poetry, childen's books, and essays, she is best known for her science fiction and fantasy, which she has written in the form of novels and short stories. | UrUr (or Urim was an ancient city in Mesopotamia, originally located near the mouth of the Euphrates and Tigris rivers on the Persian Gulf and close to Eridu. The remains are now well inland in present-day Iraq, south of the Euphrates at 30° 95' N. 46° 5' E |
| Urho Kekkonen | Urology | Urea cycle |
| Urban exploration | Urd | Urethra |
| Urethritis | Ural Mountains | Urinary tract infection |
| Urzad Ochrony Panstwa | Urban car | Urdu language |
| Ural-Altaic languages | Urban heat island | Urinary bladder |
| Ursula Southeil | Urea Breath Test | Uracil |
| Uraninite | Uranus (planet) | Urban planning |
| Urban growth boundary | Urysohn's Lemma | Urban design |
| Urartu | Uriah Heep | Urban planner |
| Urinary system | Urbanization | Uranus (mythology) |
| Uriel Acosta | Urban Mass Transportation Act | Urolagnia |
| Urbana | Urijah | Urania |
| Uruk | Ural | Uridine |
| Urbanas Diena | Urcaguary | Urotonga |
| Uranga-o-Te-Ra | Urgell | Ursa, Illinois |
| Urbana, Illinois | Urbana, Iowa | Urbandale, Iowa |
| Urania, Louisiana | Urk | Uranus (1990 film) |
| Urness Township, Minnesota | Urbank, Minnesota | Urbana, Missouri |
| Urich, Missouri | Urbana, New York | Urbana, Ohio |
| Urbancrest, Ohio | Ursina, Pennsylvania | Urbanna, Virginia |
| Urban | Urusei Yatsura | Urination |
| Uruk-hai | Uriah Heep (band) | Urticales |
| Urashima Taro | Urease | Urban secession |
| Urantia | Urbain Le Verrier | Urethral sphincter |
| Urinary incontinence | Urban housework | Ureter |
| Uropygid | Uri Geller | Urban Hymns |
| Uri Avnery | Urumqi | Urban studies |
| Urban Müller | Urocissa | Ura Zelda |
| Urbana, IVCF | Uranienborg-Majorstuen | Urban survival syndrome |
| Urge Overkill | Urban seismic risk | Urban Trad |
| Urizen | Uraniborg | Urban Dictionary |
