Technology terms starting with L

707 terms

  1. Launch Detection Initial indication by any one of a variety of sensors that a booster has been launched from some point on the surface of the earth, with initial…
  2. launch numerical aperture (LNA) The numerical aperture of an optical system used to couple (launch) power into an optical fiber.
  3. launch permission An Amazon Machine Image (AMI) attribute that allows users to launch an AMI.
  4. Launch Point Determination With computer methods, uses missile track observation to estimate the point on the earths surface from which the missile was launched, expressed in terms…
  5. Launch Under Attack (LUA) Execution by National Command Authorities of Single Integrated Operational Plan forces subsequent to tactical warning of strategic nuclear attack against…
  6. Launch Verification Confirmation of a detection of a booster launch by receiving a report from a sensor separate and independent of the sensor that initially detected a…
  7. launching fiber An optical fiber used in conjunction with a source to excite the modes of another fiber in a particular fashion.
  8. lay length In communications cables--including fiber-optic cables--having the transmission media wrapped helically around a central member, the longitudinal distance…
  9. layer A thematic set of spatial data described and stored in an ArcStorm database or a LIBRARIAN map library.
  10. layer entity An active element within a layer. [T1.630-1999]
  11. layer function A part of the activity of the layer entities. [T1.627-1993]
  12. layer index See cross-tile indexing.
  13. layer interface The boundary between two adjacent layers in the model. [T1.110-1987]
  14. layer service A capability of the (N) layer and the layers beneath it, which is provided to (N + 1) layer entities, at the boundary between the (N) layer and the (N +…
  15. layer service elements An indivisible component of the layer service made visible to the service user via layer service primitives. [T1.110-1987]
  16. layer service primitives A means for specifying in detail the adjacent layer interactions. [T1.110-1987]
  17. layer user data Data transferred between corresponding entities on behalf of the upper layer or layer management entities for which they are providing services. [T1.
  18. Layered Defense A defense that consists of several sets of weapons that operates at different phases in the trajectory of a ballistic missile.
  19. layered protocol The protocol reference model defined by layered structures based on and using the terminology of ITU-T Recommendations X.200 and X.210.
  20. layered system A system in which components are grouped, i.e., layered, in a hierarchical arrangement, such that lower layers provide functions and services that support…
  21. layout manager An object responsible for sharing the available space between multiple components within a graphical container.
  22. laziness The quality that makes you go to great effort to reduce overall energy expenditure.
  23. lb Pound.
  24. LBL Lawrence Berkeley Laboratory, Berkeley, CA.
  25. LBM Localized Battle Management/Manager(s).
  26. LBO Abbreviation for line buildout. Synonym building out.
  27. LBTS Land Based Test Site.
  28. LCC (1) See Life-Cycle Cost. (2) Launch Control Center.
  29. LCCE (1) Life-Cycle Cost. (2) Launch Control Center. (3) Land Component Commander (JCS term).
  30. LCCS Life-Cycle Contractor Support.
  31. LCD Abbreviation for liquid crystal display.
  32. LCDUI (Liquid Crystal Display User Interface) LCDUI is a shorthand way of referring to the MIDP user interface APIs, contained in the javax.microedition.lcdui package.
  33. LCF Launch Control Facility.
  34. LCM (1) Life Cycle Management. (2) Lightweight Communications Module (USAF TelComms /Computer term).
  35. LCN Logistics Control Number (ILS term).
  36. LCOM Logistics Composite Model.
  37. LCR (local continuous replication) Local continuous replication (LCR) is a single-server solution that uses built-in technology to create and maintain a copy of a storage group on a second…
  38. LCS Laser Crosslink System.
  39. LCU (Library Control Unit) connects a StorageTek tape robotic unit to a Library Management Unit (LMU) and controls the robot movement.
  40. LDAP A protocol for accessing directory information. LDAP or Lightweight Directory Access Protocol is used by browsers and email clients to look up email…
  41. LDAP (Lightweight Directory Access Protocol) Enables LDAP clients to access directory information from an Exchange directory. [Exchange 5.5]
  42. LDAP directory A hierarchical directory of names that can reflect an organization's structure or geography and that is accessed via the LDAP protocol.
  43. LDC Less Developed Country.
  44. LDEF Long Duration Exposure Facility (NASA).
  45. ldifde A command-line tool for importing and exporting directory contents to and from Active Directory / ADAM, such as schema definitions and directory objects…
  46. LDM Abbreviation for limited distance modem.
  47. LDP ldp.exe is a graphical user interface (GUI) tool for general administration of a Lightweight Directory Access Protocol (LDAP) directory service.
  48. LDR Low Data Rate.
  49. LDS Lightning Detection System
  50. LE Lethality Enhancer (PAC-3).
  51. Lead Component/ Service The DoD Component designated by SECDEF to be responsible for management of a system acquisition involving two or more DoD Components in a joint program.
  52. LEAF Law Enforcement Access Field.
  53. Leakage Free flow loss of water through a hole or crack.
  54. Leakage (Max) The maximum allowable threat objects passing through a BMD system expressed as a percentage of the design-to threat.
  55. leaky bucket counter A counter that is incremented by one each time an event occurs and is decremented by a fixed value periodically. [T1.218-1991]
  56. leaky mode In an optical fiber, a mode having a field that decays monotonically for a finite distance in the transverse direction but becomes oscillatory everywhere…
  57. leaky ray In an optical fiber, a ray for which geometric optics would predict total internal reflection at the boundary between the core and the cladding, but which…
  58. LEAP Lightweight Exoatmospheric Projectile.
  59. leap second An occasional adjustment of one second, added to, or subtracted from, Coordinated Universal Time (UTC) to bring it into approximate synchronism with UT1…
  60. LEASAT Leased Satellite.
  61. leased circuit Dedicated common-carrier facilities and channel equipment used by a network to furnish exclusive private line service to a specific user or group of users.
  62. Least Privilege This principle requires that each subject in a system be granted the most restrictive set of privileges (or lowest clearance) needed for the performance…
  63. least significant bit In a binary code, the bit or bit position that is assigned to, or represents, the smallest quantity or increment that can be represented by the code.
  64. least-cost path The path, among possibly many, between two points which has the lowest traversal cost, where cost is a function of time, distance, or other user-defined…
  65. least-time principle Synonym Fermat's principle.
  66. LEC Abbreviation for local exchange carrier.
  67. LED (1) Low Endoatmospheric Defense. (2) Light Emitting Diode.
  68. LEDI Low Endoatmospheric Defense Interceptor.
  69. LEDS (1) Low Endoatmospheric Defense System. (2) Link Eleven Display System (USN term).
  70. left shift A "bit shift" that multiplies the number by some power of 2.
  71. left shift operator The left shift operator (<<) is a bit manipulation operator. It moves the bits in its left operand zero or more places to the left, according to the value…
  72. left-hand (anti-clockwise) polarized wave An elliptically or circularly polarized wave, in which the electric field vector, observed in the fixed plane, normal to the direction of propagation…
  73. left-right topology The topological data structure ARC/INFO uses to represent contiguity between polygons. Left-right supports analysis functions such as adjacency.
  74. leftmost longest The preference of the "regular expression" engine to match the leftmost occurrence of a "pattern", then given a position at which a match will occur, the…
  75. Leg A side post in tunnel timbering.
  76. legacy application When used in the context of the User Account Control (UAC) infrastructure, an application that does not have an application manifest that indicates…
  77. Legacy Data Information in the development process that may have significant resources invested into it that has been produced and/or stored on software and/or…
  78. legacy system Software and/or hardware that has become obsolete or been replaced, but which continues to store data
  79. Legal custody a form of child custody that grants one parent the right to make decisions about the child's upbringing.
  80. Legal Hold A legal hold is a communication issued as a result of current or anticipated litigation, audit, government investigation or other such matter that…
  81. legal instrument a deed of conveyance, court judgment, decree, or other similar public record of an official judicial, legislative, executive, or administrative action or…
  82. legal value usefulness of a record in complying with statutes and regulations, as evidence in legal proceedings, as legal proof of business transactions, or to…
  83. legend The reference area on a map that lists and explains the colors, symbols, line patterns, shadings, and annotation used on the map.
  84. LEI Low Endoatmospheric Interceptor.
  85. LEIP Link Eleven Improvement Program (USN term).
  86. LEL Low Energy Laser.
  87. LELWS Low Energy Laser Weapon System.
  88. LEM Logistics Element Manager (ILS term).
  89. lemma The canonical form of a word. Lemmas are significant in highly inflected languages such as Czech.
  90. Lemmatization Utilizing lemmatization enables the search system to recognize and match different grammatical forms of a word.
  91. Lemmatization by expansion A type of lemmatization which expands words into the full set of inflected forms.
  92. Lemmatization by reduction A type of lemmatization, also referred to as "base form reduction", that normalize indexed terms and query terms to their grammatical base form.
  93. length indicator (LI) A six-bit field that defines message length and that is used to differentiate between message signal units, link status signal units, and fill-in signal…
  94. LEO Low Earth Orbit.
  95. LERG Assigne The SP responsible for default routing functions associated with a pooled NXX code.
  96. LERG&#8482; Routing Guide The Telcordia® LERG™ Routing Guide contains information about the local routing data obtained from the BIRRDS.
  97. LETS LWIR Environment and Threat Simulation.
  98. letter-by-letter arrangement A sorting technique that orders entries based on each character in a heading without regard for spaces or punctuation See also word-by-word arrangement.
  99. letterhead A preset design that appears at the top of an e-mail message.
  100. Level The number of values used in a card counting system. A level one counting system only uses +1 and -1, but a level two system would use +1, +2, -1 and -2…