Technology terms starting with L

707 terms

  1. lost call A call that has not been completed for any reason other than cases where the call receiver (termination) is busy.
  2. lost frame A frame that is not delivered to the destination user within an agreed-upon measurement period, and the network is responsible.
  3. LOTS Logistics Over-The-Shore.
  4. Lotus QuickPlace place A Web venue that is provided by Lotus QuickPlace that enables geographically dispersed participants to collaborate on projects and communicate online in a…
  5. Lotus QuickPlace room A partitioned area of a Lotus QuickPlace place that is restricted to authorized members who share a common interest and a need to work collectively.
  6. Low A region of low pressure, marked as "L" on a weather map. A low center is usually accompanied by precipitation, extensive cloudiness, and moderate winds.
  7. Low Altitude Demonstration System (LADS) Part of the SBIRS Low Program Definition and Risk Reduction (PDRR) program phase.
  8. low Earth orbit See LEO.
  9. Low Earth Orbit (LEO) These satellites are at altitudes between 100 and 400 nautical miles. They have short duration revolutions (about 90 minutes), short visibility envelopes…
  10. Low Endoatmosphere That portion of the earth's atmosphere, generally below 40 km altitude. 170
  11. low frequency (LF) Any frequency in the band from 30 kHz to 300 kHz. See electromagnetic spectrum.
  12. Low Impact System An information system in which all three security objectives (i.e., confidentiality, integrity, and availability) are assigned a FIPS 199 potential impact…
  13. low integrity access token A filtered access token that is created with a low integrity level. This access token is used by Internet Explorer Protected Mode, but can also be used by…
  14. low level programming languages Often known as `assembly languages', these provide little more than the basic instruction set of a particular Central Processing Unit.
  15. Low Power Fm Radio (LPFM) A broadcast service that permits the licensing of 50- to 100-watt FM radio stations within a service radius of up to 3.
  16. Low Power Television (LPTV) A broadcast service that permits program broadcasting via television translators operating with low power.
  17. low-level keying Synonym low-level signaling.
  18. low-level language Synonym computer-oriented language.
  19. low-level modulation Modulation of a signal, e.g., a carrier, at a point in a system or device, such as a radio transmitter, where the power level is low compared to the final…
  20. low-level signaling The use on signal lines of voltage levels that are between the limits of positive and negative 6 volts. Synonym low-level keying.
  21. low-pass filter A filter network that passes all frequencies below a specified frequency with little or no loss, but strongly attenuates higher frequencies.
  22. low-performance equipment Equipment that has imprecise characteristics that do not meet system reliability requirements. 2.
  23. low-power communication device A restricted radiation device, exclusive of those employing conducted or guided radio frequency techniques, used for the transmission of signs, signals…
  24. Low-Rate Initial Production (LRIP) The production of a system in limited quantity to provide articles for operational test and evaluation, to establish an initial production base, and to…
  25. lower frequency ground Deprecated term. See facility grounding system.
  26. lowest usable high frequency (LUF) The lowest frequency in the HF band at which the received field intensity is sufficient to provide the required signal-to-noise ratio for a specified time…
  27. LOWKATRER Low Weight Kinetic Energy Active Tracker.
  28. LOWTRAN Atmospheric and Interstellar Background Signature Model.
  29. LP Abbreviation for linear programming, linking protection.
  30. LP mode Abbreviation for linearly polarized mode.
  31. LP01 mode Designation of the fundamental LP mode. See fundamental mode.
  32. LPAR Large Phased Array Radar.
  33. LPC Abbreviation for linear predictive coding.
  34. LPD Low Probability of Detection.
  35. LPE (1) Liquid Phase Epitaxy . (2) Launch Point Estimate.
  36. LPI Low Probability of Intercept.
  37. LPS Abbreviation for lipopolysaccharide.
  38. LQA Abbreviation for link quality analysis.
  39. LR Long Range.
  40. LRA (1) Line-Replaceable Assembly. (2) Launch and Recovery Element.
  41. LRB Liquid Rocket Booster.
  42. LRC Lewis Research Center, Cleveland, OH.
  43. LRE (1) Latest Revise Estimate. (2) Launch and Recovery Element.
  44. LREP Light Replicas.
  45. LRF Laser Range Finder.
  46. LRINF Longer Range Intermediate Nuclear Forces.
  47. LRIP See Low-Rate Initial Production.
  48. LRIP-OT Low Rate Initial Production Operational Testing.
  49. LRTBM Long Range TBM.
  50. LRTNF Long-range Theater Nuclear Force.
  51. LRU (1) Line Replaceable Units. (2) Line Replacement Units.
  52. LS Launching Stations (PATRIOT).
  53. LSA Logistics Support Analysis.
  54. LSA (Link State Algorithm) The algorithm used to propagate routing status information between servers running Exchange 2000.
  55. LSAP Logistics Support Analysis Program.
  56. LSAR Logistics Support Analysis Record.
  57. LSART LSA Review Team (ILS term).
  58. LSAT Laser Satellite. 171
  59. LSAWG LSA Working Group.
  60. LSB Abbreviation for least significant bit, lower sideband.
  61. LSE Lifetime Support Engineering (ILS term).
  62. LSEA Lifetime Support Engineering Activity (ILS term).
  63. LSF A job scheduler mechanism supported by GRAM. For more information, see http://www.platform.com/Products/Platform.LSF.Family/Platform.LSF/.
  64. LSI Large Scale Integration (circuits).
  65. LSM (Library Storage Module) a tape library containing cells (or slots or bins) in which cartridges are stored, usually for access by an automated cartridge system. See ACS.
  66. LSRS Loral Space and Range Systems, Sunnyvale, CA.
  67. LST Local Standard Time
  68. LSTS Launcher Station Test Site.
  69. LTA Lead Time Analysis.
  70. LTBT Limited Test Ban Treaty.
  71. LTC Abbreviation for line traffic coordinator.
  72. LTD Limited
  73. LTH Lethality and Target Hardening.
  74. LTO (Linear Tape-Open) A type of backup tape which can hold as much as 400 GB of data, or 600 CDs depending on the data file format.
  75. LTS Low Temperature Superconductor
  76. LTV Launch Test Vehicle.
  77. LU Launch and Update.
  78. LUA Launch Under Attack.
  79. Lubricant (LOO-brih-kant) An oily or slippery substance.
  80. LUF Acronym for lowest usable high frequency.
  81. luminance range 1. In CRT displays, the difference in brightness between the lightest and the darkest element of a scene or its display. [After SMPTE] 2.
  82. luminance signal 1. In television technology, the signal that describes (a) the distribution of brightness levels within the image and (b) the equation for deriving that…
  83. luminescent diode See superluminescent LED.
  84. luminous flux The rate of flow of radiant energy. Note: Luminous flux is expressed in lumens (cd sr).
  85. luminous intensity See candela.
  86. LUN Logical Unit Number. A logical unit of storage.
  87. LUN (Logical Unit Number) A unique identifier used on a SCSI bus to distinguish between devices that share the same bus.
  88. LUN Masking A method to restrict server access to storage not specifically allocated to that server.
  89. LUP Limited U.S. Protection.
  90. lurker In the Internet, a participant in a chat room or a subscriber to a mailing list or newsgroup who passively observes but does not actively participate in…
  91. lurking Passive participation in (i.e., monitoring) the activities of a mailing list, a newsgroup, an IRC channel, a video connection, or any other Internet…
  92. LUT Limited User Test.
  93. LUT/OA Limited User Test/Operational Assessment.
  94. lvaluable Able to serve as an "lvalue".
  95. lvalue Term used by language lawyers for a storage location you can assign a new "value" to, such as a "variable" or an element of an "array".
  96. lvalue modifier An adjectival pseudofunction that warps the meaning of an "lvalue" in some declarative fashion.
  97. LVD (Low Voltage Differential) Introduced with Ultra2 SCSI, and further enhanced with Ultra160 and Ultra320 SCSI, LVD technology enables data transfer to 320MB/s and supports cable…
  98. LVS Loral Vought Systems, a defense industry contractor.
  99. LVT Low Volume Terminal (USN/NATO/Telecomm term).
  100. LW Laser Weapons.