longA term signifying ownership of securities. "I am long 100 XYZ," means that the speaker owns 100 shares of XYZ.
Long Lead ItemsThose components of a system for which the times to design and fabricate are the longest, and, therefore, to which an early commitment of funds may be…
long lineA transmission line in a long-distance communications network. Note: Examples of long lines are TDM and FDM carrier systems, microwave radio links…
long silent intervalA silent interval during a ringing cycle or pattern that lasts at least 1200 ms. [T1.401-1998]
Long TailPhrase describing how for any category of product being sold there is much more aggregate demand for the non-hits than there is for the hits.
Long Term RetentionRetention of data for 5 years to satisfy requirements for local studies and to support litigation.
long transactionLong transactions support applications where changes to a database might span several days, weeks or months and may involve several sessions.
long wavelengthIn fiber optic communications, pertaining to optical wavelengths greater than 1 m.
Long Wavelength Infrared (LWIR)Thermal radiation emitted by a source in the electromagnetic spectrum encompassing infrared wavelengths of 6 to 30 microns.
long-distance callAny telephone call to a destination outside the local service area of the calling station, whether inter-LATA or intra-LATA, and for which there is a…
long-haul communicationsIn public switched networks, pertaining to circuits that span large distances, such as the circuits in inter-LATA, interstate, and international…
long-term bit error rateBit error rate measured over a sufficiently long period, for example, one month. [T1.226-1992]
long-term recordRecords that have enduring value to the organization
long-term stabilityOf an oscillator, the degree of uniformity of frequency over time, when the frequency is measured under identical environmental conditions, such as supply…
LongitudeThe location east or west in reference to the Prime Meridian, which is designated as zero (0) degrees longitude.
longitudinal balanceThe electrical symmetry, with respect to ground, of the two wires of a pair 2. An expression of the difference in impedance of the two sides of a circuit.
longitudinal balance-audioThe ratio of the disturbing longitudinal source voltage, Vs, and the resultant metallic voltage, Vm, at the same frequency of the network under test…
longitudinal voltageA voltage induced or appearing along the length of a transmission medium. Note 1: Longitudinal voltage may be effectively eliminated by using differential…
look-and-feelThe visual impression and interaction style provided by a user interface. This is predominantly the responsibility of the window manager (in collaboration…
lookaheadAn "assertion" that peeks at the string to the right of the current match location.
lookbehindAn "assertion" that peeks at the string to the left of the current match location.
LooksmartCompany originally launched as a directory service which later morphed into a paid search provider and vertical content play. See also: Looksmart.com
lookup tableA special tabular data file containing additional attributes for features stored in an associated feature attribute table.
loopA construct that performs something repeatedly, like a roller coaster.
loop closureA condition in which the network presents a low-resistance tip-to-ring dc path at the network interface (NI). [T1.407-1990]
loop compensation lossThe loss that could be provided by a digital loop carrier system or a fiber-in-the-loop system when a short customer analog access cable results in…
loop control statementAny statement within the body of a loop that can make a loop prematurely stop looping or skip an "iteration".
loop filterIn a phase-locked loop, a filter located between the phase detector (or time discriminator) and the voltage controlled oscillator (or phase shifter).
loop gainThe total usable power gain of a carrier terminal or two-wire repeater. Note: The maximum usable gain is determined by, and may not exceed, the losses in…
loop labelA kind of key or name attached to a loop (or roller coaster) so that loop control statements can talk about which loop they want to control.
loop noiseThe noise contributed by one or both loops of a telephone circuit to the total circuit noise.
loop openA signal in which the network applies a high resistance between the tip and ring conductors at the network interface (NI). [T1.407-1997]
loop startA supervisory signal given by a telephone or PBX in response to completing the loop path.
loop testA test that uses a closed circuit, i.e., loop, to detect and locate faults.
loop transmissionMultipoint transmission in which (a) all the stations in a network are serially connected in one closed loop, (b) there are no cross-connections, (c) the…
loop variableA variable used to control the operation of a loop, such as a for loop. Typically, a loop variable will be given an initial value and it is then…
loop-backA method of performing transmission tests of access lines from the serving switching center, which method usually does not require the assistance of…
looped dual busA distributed-queue dual-bus (DQDB) scheme in which the head-of-bus functions for both buses are at the same location.
LoranLong Range Navigation, a system of long range navigation whereby latitude and longitude are determined from the time displacement of radio signals from…
loran stationA long distance radionavigation land station transmitting synchronized pulses. Hyperbolic lines of position are determined by the measurement of the…
LossThe amount an insurance company pays on a claim.
Loss DeviationThe term "Loss Deviation" denotes the variation of the actual loss from the designed value.
lossless compressionExact construction of image, bit-by-bit, with no loss of information.
lossy compressionReduces storage size of image by reducing the resolution and color fidelity while maintaining minimum acceptable standard for general use.
lossy failoverAn unscheduled outage of a clustered mailbox server (CMS) in a cluster continuous cluster (CCR) environment in which data was lost. [Exchange 2007]
lossy mediumA medium in which a significant amount of the energy of a propagating electromagnetic wave is absorbed per unit distance traveled by the wave. [After 2196]
lost blockA block not delivered to the user within a specified maximum end-to-end block transfer time.
lost callA call that has not been completed for any reason other than cases where the call receiver (termination) is busy.
lost frameA frame that is not delivered to the destination user within an agreed-upon measurement period, and the network is responsible.
Lotus QuickPlace placeA Web venue that is provided by Lotus QuickPlace that enables geographically dispersed participants to collaborate on projects and communicate online in a…
Lotus QuickPlace roomA partitioned area of a Lotus QuickPlace place that is restricted to authorized members who share a common interest and a need to work collectively.
LowA region of low pressure, marked as "L" on a weather map. A low center is usually accompanied by precipitation, extensive cloudiness, and moderate winds.
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…
Low EndoatmosphereThat portion of the earth's atmosphere, generally below 40 km altitude. 170
low frequency (LF)Any frequency in the band from 30 kHz to 300 kHz. See electromagnetic spectrum.
Low Impact SystemAn information system in which all three security objectives (i.e., confidentiality, integrity, and availability) are assigned a FIPS 199 potential impact…
low integrity access tokenA 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…
low level programming languagesOften known as `assembly languages', these provide little more than the basic instruction set of a particular Central Processing Unit.
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.
Low Power Television (LPTV)A broadcast service that permits program broadcasting via television translators operating with low power.
low-level modulationModulation 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…
low-level signalingThe use on signal lines of voltage levels that are between the limits of positive and negative 6 volts. Synonym low-level keying.
low-pass filterA filter network that passes all frequencies below a specified frequency with little or no loss, but strongly attenuates higher frequencies.
low-performance equipmentEquipment that has imprecise characteristics that do not meet system reliability requirements. 2.
low-power communication deviceA restricted radiation device, exclusive of those employing conducted or guided radio frequency techniques, used for the transmission of signs, signals…
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…
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…
LOWKATRERLow Weight Kinetic Energy Active Tracker.
LOWTRANAtmospheric and Interstellar Background Signature Model.
LPAbbreviation for linear programming, linking protection.