uldazepamA benzodiazepine drug with sedative and anxiolytic effects.
uleA Mexican and Central American tree (Castilla elastica), related to the breadfruit tree, whose milky juice contains caoutchouc.
ulegyriaA form of cortical scarring in the deep regions of the sulcus that leads to distortion of the gyri, often caused by hypoxic-ischemic brain injury in the perinatal period.
ulerythemaAny of several cutaneous conditions involving redness and scarring, including atrophoderma vermiculatum and keratosis pilaris atrophicans faciei.
ulexineThe alkaloid cytisine when extracted from gorse (of genus Ulex).
ulexiteA white mineral with triclinic crystals, NaCaB₅O₉·8H₂O, noted for its fibers which transmit light by internal reflection, such that a piece with flat faces perpendicular to the fibers' orientation displays an image of whatever is adjacent to its other side.
UleyA village and civil parish in Stroud district, Gloucestershire, England (OS grid ref ST7998).
ulinastatinA glycoprotein, either derived from urine or produced synthetically, that acts as a trypsin inhibitor and can be used to treat various medical conditions.
ulipristalA selective progesterone receptor modulator used in the acetate form for emergency contraception and to treat uterine fibroids.
UlithiAn atoll in the Caroline Islands of the western Pacific Ocean, about 191 km (103 nmi) east of Yap.
ulnaThe bone of the forearm that extends from the elbow to the wrist on the side opposite to the thumb, corresponding to the fibula of the hind limb. Also, the corresponding bone in the forelimb of any vertebrate.
ulodendroidLike the former fossil genus Ulodendron; applied to branches of Lepidodendron and Sigillaria that bear two opposite rows of large cup-shaped scars.
ulodendronAny of various trees known only as fossils from the Pennsylvanian period, and belonging to the genus Ulodendron.
UlotrichiHuman races that have "crisp" or "woolly" hair, according to a system by Jean-Baptiste Bory de Saint-Vincent of classifying different races of humans as separate species.
ulsterA long, loose overcoat made of wool or other rough material, often called a greatcoat, which sometimes features an attached shoulder cape covering the back and sleeves, and which can sometimes be buttoned in front.