ExpertGlossary terms starting with U

800 terms

  1. UIPI A window manager subsystem that blocks applications at a lower UI privilege level from sending messages to or hooking threads belonging to processes with…
  2. UKAS (1) UK Architecture Study (2) UK Associate Studies.
  3. UKEADTB UK Extended Air Defense Test Bed.
  4. UKMET A medium-range (3 to 7 day) numerical weather prediction model operated by the U nited K ingdom MET eorological Agency.
  5. UKTB United Kingdom Test Bed.
  6. ulcer (UHL-ser) A break on the skin, in the lining of an organ, or on the surface of a tissue.
  7. ulceration The formation of a break on the skin or on the surface of an organ. An ulcer forms when the surface cells die and are cast off.
  8. ulcerative colitis Chronic inflammation of the colon that produces ulcers in its lining. This condition is marked by abdominal pain, cramps, and loose discharges of pus…
  9. ULCS Unit Level Circuit Switch (SINCGARS term).
  10. ULF Abbreviation for ultra low frequency. See electromagnetic spectrum.
  11. ULJ Upper Level Jet
  12. Ulmus fulva The inner bark of this plant has been used in some cultures to treat certain medical problems. It may have antioxidant effects.
  13. Ulmus rubra The inner bark of this plant has been used in some cultures to treat certain medical problems. It may have antioxidant effects.
  14. ULS Unit Level Switch.
  15. ULSA Ultra Low Sidebobe Antenna.
  16. ULTDS Unit Level Tactical Data Switch (SINCGARS term).
  17. Ultimate Analysis A procedure for determining the primary elements in a substance (carbon, hydrogen, oxygen, nitrogen, sulfur, and ash).
  18. Ultimate bearing capacity The load per unit of area required to produce failure by rupture of a supporting soil or rock mass.
  19. Ultimate beneficial owner See Ultimate beneficial owner (UBO)
  20. Ultimate beneficial owner (UBO) The person, or entity, that ultimately owns or controls a U.S. affiliate of a foreign company and that derives the benefits associated with ownership or…
  21. Ultra Beyond; outside of; in excess of.
  22. Ultra High Frequency (UHF) Those radio frequencies exceeding 300 MHz
  23. ultra low frequency (ULF) Frequencies from 300 Hz to 3000 Hz. See electromagnetic spectrum.
  24. Ultra vires Beyond power; beyond or exceeding legal power or authority.
  25. Ultrafiche Microfiche which can hold 1,000 documents/sheet as opposed to the normal 270.
  26. ultralight Lighter than standard fishing rod and/or tackle.
  27. ultrasonication See: sonication.
  28. ultrasonogram A computer picture of areas inside the body created by bouncing high-energy sound waves (ultrasound) off internal tissues or organs. Also called sonogram.
  29. ultrasonography (UL-truh-soh-NAH-gruh-fee) A procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes.
  30. Ultrasound (UL-truh-SOWND) A procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes.
  31. ultrasound biomicroscopy (UL-truh-SOWND BY-oh-my-KROS-koh-pee) A type of ultrasound eye exam that makes a more detailed image than regular ultrasound.
  32. ultrasound energy A form of therapy being studied as an anticancer treatment. Intensified ultrasound energy can be directed at cancer cells to heat them and kill them.
  33. ultrasound transducer A device that produces sound waves that bounce off body tissues and make echoes.
  34. ultrasound-guided biopsy (BY-op-see) A biopsy procedure that uses an ultrasound imaging device to find an abnormal area of tissue and guide its removal for examination under a…
  35. Ultraviolet Electromagnetic radiation at wavelengths shorter than 400 nm.
  36. Ultraviolet (UV) Electromagnetic radiation of wavelength between the shortest visible violet (about 3,850 Angstroms) and soft x-rays (about 100 Angstroms).
  37. Ultraviolet Index This index provides important information to help you plan your outdoor activities in ways that prevent overexposure to the sun's rays.
  38. ultraviolet radiation (UL-truh-VY-oh-let RAY-dee-AY-shun) Invisible rays that are part of the energy that comes from the sun.
  39. Ultraviolet Radiation (UV) The energy range just beyond the violet end of the visible spectrum. Although ultraviolet radiation constitutes only about 5 percent of the total energy…
  40. ultraviolet radiation therapy (UL-truh-VY-oh-let RAY-dee-AY-shun THAYR-uh-pee) A form of radiation used in the treatment of cancer.
  41. ultrawideband See UWB.
  42. UM access telephone number A telephone number that points to a hunt group and is the access number for calls that are routed to Unified Messaging servers.
  43. umask A mask of those "permission bits" that should be forced off when creating files or directories, in order to establish a policy of whom you'll ordinarily…
  44. umbilical cord blood (um-BIH-lih-kul KORD blud) Blood from the umbilical cord of a newborn baby. This blood contains high concentrations of stem cells (cells from which all…
  45. Umbilical cord blood stem cells stem cells collected from the umbilical cord at birth that can produce all of the blood cells in the body (hematopoietic).
  46. umbilical cord blood transplantation (um-BIH-lih-kul kord blud tranz-plan-TAY-shun) The injection of umbilical cord blood to restore an individual's own blood production system suppressed by…
  47. Umbilical cord stem cells Hematopoietic stem cells are present in the blood of the umbilical cord during and shortly after delivery.
  48. Umbra In solar-terrestrial terms, the dark core or cores (umbrae) in a sunspot with penumbra, or a sunspot lacking penumbra.
  49. Umbrella Liability Insurance A policy that "floats" above your other coverage. You must carry a certain amount of underlying liability coverage before you may buy an umbrella policy.
  50. UMD Unit Manning Document.
  51. UML Unified Modeling Language
  52. UMMIPS Uniform Material Movement and Issue Priority System (ILS term).
  53. UMP Abbreviation for the (ribo)nucleotide uridine 5'-monophosphate. See: uridylic acid.
  54. UMS Universal messaging system.
  55. UMTS (Universal Mobile Telecommunications Service) Developed by Nortel Networks, Universal Mobile Telecommunications Service (UMTS) is a standard that will provide cellular users a consistent set of…
  56. UN United Nations.
  57. Una voce With one voice; unanimously.
  58. UNAAF Unified Action Armed Forces.
  59. Unallocated Space The area of computer media, such as a hard drive, that does not contain normally accessible data.
  60. unallowable character Synonym illegal character.
  61. unanimous consent A Senator may request unanimous consent on the floor to set aside a specified rule of procedure so as to expedite proceedings.
  62. unanimous consent agreement A unanimous consent request setting terms for the consideration of a specified bill or other measure.
  63. unary operator An operator taking a single operand. Java's unary operators are -, +, !, !, ++ and --.
  64. unassigned cell A cell identified by a standardized virtual path identifier (VPI) and virtual channel identifier (VCI) value, which has been generated and does not carry…
  65. unattend.xml A file that automates Windows Setup. This file enables the configuration of Windows settings, the addition and removal of components, and many Windows…
  66. Unauthorized Access A person gains logical or physical access without permission to a network, system, application, data, or other resource.
  67. Unauthorized Disclosure An event involving the exposure of information to entities not authorized access to the information.
  68. unavailability A expression of the degree to which a system, subsystem, or equipment is not operable and not in a committable state at the start of a mission, when the…
  69. Unbalanced count A card counting system where the number of positive cards and negative cards is not equal.
  70. Unbalanced head. See differential head.
  71. unbalanced line A transmission line, such as a coaxial cable, in which the magnitudes of the voltages on the two conductors are not equal with respect to ground.
  72. unbalanced modulator A modulator in which the modulation factor is different for the alternate half-cycles of the carrier. Synonym asymmetrical modulator.
  73. unbalanced wire circuit A circuit in which the two sides are inherently electrically dissimilar.
  74. unbound mode Synonym radiation mode.
  75. unbounded The number of potential occurrences is not limited by a set number. This value is often used when defining a data type that is a list (for example…
  76. unbounded repetition Repetition where the statements within a loop's body are performed an arbitrary number of times, according to the effects of the statements within the…
  77. unbundling In the context of the FCC's Computer III Inquiry, the process of separating individual tariffed offerings and services that are associated with a specific…
  78. Unbundling (functional unbundling) Electric service is traditionally provided on a bundled basis, meaning that generation, transmission, and distribution services are provided as a single…
  79. UNC United Nations Command.
  80. Uncertainty Describes situations where potential outcomes cannot be estimated based on historical events.
  81. unchecked exception An exception for which it is not required to provide a local try statement, or to propagate via a throws clause defined in the method header.
  82. unclassified Information that has not been determined pursuant to Executive Order (E.O.) 12958 or any predecessor order to require protection against unauthorized…
  83. Unclassified excavation Excavation paid for at a fixed price per yard, regardless of whether it is common or rock excavation.
  84. Uncollected Funds A portion of a deposit balance that has not yet been collected by the depository bank.
  85. Uncompacted backfill Material used in refilling an excavation without the material being compacted. See backfill.
  86. Uncompensated Care Health care or services provided by hospitals or health care providers that don't get reimbursed.
  87. Unconditioned space Any space that is not meant to be heated.
  88. Unconfined aquifer See Aquifer-unconfined
  89. Unconformity A break or gap in the geologic record where rock layers were eroded or never deposited.
  90. Unconsolidated (basin fill deposits) Loose sediment; lacking cohesion or cement.
  91. Unconsolidated shore wetlands Includes all wetland habitats having three characteristics: (1) unconsolidated substrates with less than 75% areal cover of stones, boulders, or bedrock…
  92. Uncontrolled Diabetes Admissions Diabetes is a disease in which blood glucose levels are above normal. Most of the food we eat is turned into glucose, or sugar, for our bodies to use for…
  93. uncontrolled study A clinical study that lacks a comparison (i.e., a control) group.
  94. unconventional cancer treatments Approaches that use substances or methods of treating cancer that have not been shown to be effective by accepted scientific methods, such as carefully…
  95. Unconventional natural gas A term applied to natural gas that is difficult and expensive to find and produce; if found, it often is bypassed in favor of more easily obtainable…
  96. Unconventional Warfare A broad spectrum of military and paramilitary operations conducted in enemyheld , enemy-controlled or politically sensitive territory.
  97. Uncooperative User An individual who actively tries to deny the capture of his/her biometric data.
  98. Uncovered option An uncovered option, also known as a naked option, is an option that is not backed by another position.
  99. Under Review The review status of a financial disclosure report after the filer has eSigned and submitted their report for review.
  100. Under the Gun The position of the player who acts first on a betting round. For instance, if you are one to the left of the big blind, you are under the gun before the…