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…
LCU (Library Control Unit)connects a StorageTek tape robotic unit to a Library Management Unit (LMU) and controls the robot movement.
LDAPA protocol for accessing directory information. LDAP or Lightweight Directory Access Protocol is used by browsers and email clients to look up email…
ldifdeA command-line tool for importing and exporting directory contents to and from Active Directory / ADAM, such as schema definitions and directory objects…
Lead Component/ ServiceThe DoD Component designated by SECDEF to be responsible for management of a system acquisition involving two or more DoD Components in a joint program.
LeakageFree flow loss of water through a hole or crack.
Leakage (Max)The maximum allowable threat objects passing through a BMD system expressed as a percentage of the design-to threat.
leaky bucket counterA counter that is incremented by one each time an event occurs and is decremented by a fixed value periodically. [T1.218-1991]
leaky modeIn an optical fiber, a mode having a field that decays monotonically for a finite distance in the transverse direction but becomes oscillatory everywhere…
leaky rayIn 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…
leap secondAn occasional adjustment of one second, added to, or subtracted from, Coordinated Universal Time (UTC) to bring it into approximate synchronism with UT1…
leased circuitDedicated common-carrier facilities and channel equipment used by a network to furnish exclusive private line service to a specific user or group of users.
Least PrivilegeThis principle requires that each subject in a system be granted the most restrictive set of privileges (or lowest clearance) needed for the performance…
least significant bitIn 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.
least-cost pathThe 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…
LEDS(1) Low Endoatmospheric Defense System. (2) Link Eleven Display System (USN term).
left shiftA "bit shift" that multiplies the number by some power of 2.
left shift operatorThe 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…
left-hand (anti-clockwise) polarized waveAn elliptically or circularly polarized wave, in which the electric field vector, observed in the fixed plane, normal to the direction of propagation…
left-right topologyThe topological data structure ARC/INFO uses to represent contiguity between polygons. Left-right supports analysis functions such as adjacency.
leftmost longestThe 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…
legacy applicationWhen used in the context of the User Account Control (UAC) infrastructure, an application that does not have an application manifest that indicates…
Legacy DataInformation in the development process that may have significant resources invested into it that has been produced and/or stored on software and/or…
legacy systemSoftware and/or hardware that has become obsolete or been replaced, but which continues to store data
Legal custodya form of child custody that grants one parent the right to make decisions about the child's upbringing.
Legal HoldA legal hold is a communication issued as a result of current or anticipated litigation, audit, government investigation or other such matter that…
legal instrumenta deed of conveyance, court judgment, decree, or other similar public record of an official judicial, legislative, executive, or administrative action or…
legal valueusefulness of a record in complying with statutes and regulations, as evidence in legal proceedings, as legal proof of business transactions, or to…
legendThe reference area on a map that lists and explains the colors, symbols, line patterns, shadings, and annotation used on the map.
lemmaThe canonical form of a word. Lemmas are significant in highly inflected languages such as Czech.
LemmatizationUtilizing lemmatization enables the search system to recognize and match different grammatical forms of a word.
Lemmatization by expansionA type of lemmatization which expands words into the full set of inflected forms.
Lemmatization by reductionA type of lemmatization, also referred to as "base form reduction", that normalize indexed terms and query terms to their grammatical base form.
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…
letter-by-letter arrangementA sorting technique that orders entries based on each character in a heading without regard for spaces or punctuation See also word-by-word arrangement.
letterheadA preset design that appears at the top of an e-mail message.
LevelThe 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…
level alignmentThe adjustment of transmission levels of single links and of links in tandem to prevent problems such as overloading of transmission subsystems.
Level of Effort (LOE)Effort of a general or supportive nature that does not produce definite end products or results, e.g. contract man-hours.
level of protection[The] extent to which protective measures, techniques, and procedures must be applied to information systems (IS) and networks based on risk, threat…
LeverageLeverage is an investment technique in which you use a small amount of your own money to make an investment of much larger value.
lexicalPertaining to how the characters in source code are translated into tokens that the compiler can understand.
lexical affinityThe relationship of search words that appear close to each other in the document. Lexical affinity is used to calculate the relevancy of a result.
lexical scopingLooking at your Oxford English Dictionary through a microscope. (Also known as "static scoping", because dictionaries don't change very fast.
lexical variableA "variable" subject to "lexical scoping", declared by my. Often just called a "lexical".
lexicographic orderingThe ordering of words as they would be found in a dictionary. It should be noted that different locales order similar looking words according to their own…
LILifted Index. A common measure of atmospheric instability. Its value is obtained by computing the temperature that air near the ground would have if it…
LIBRARIANMeets the informational needs of the judges and lawyers.
LibrariesIn order to share files, Sharepoint makes use of libraries. The three types of libraries available in Sharepoint are document libraries, form libraries…
libraryA collection of cells, usually bacteria or yeast, that have been transformed with recombinant vectors carrying DNA inserts from a single species.
LibtoolLibtool is a GNU library support script that abstracts shared library interface. Used by GSI/Sysconfig.
license serverA computer on which the TS Licensing role service is installed. A license server issues TS CALs to users or devices that connect to a terminal server.
license server discovery modeA mode that is configured on the terminal server that determines which method to use to find (âdiscoverâ) a Terminal Services license server in…
LIDARAn instrument similar to a radar but uses a laser to generate light pulses rather than radio waves, generally used to measure aerosol content and particle…
life cycleThe sequence of events from a given developmental stage in one generation to the same stage in the following generation.
life cycle (J2EE component)The framework events of a J2EE component's existence. Each type of component has defining events that mark its transition into states in which it has…
life cycle (JavaServer Faces)A set of phases during which a request for a page is received, a UI component tree representing the page is processed, and a response is produced.
life cycle (of a record)distinct phases of a record's existence, from creation to final disposition
Life Cycle of a Weapon SystemAll phases of the system's life including research, development, test and evaluation, production, deployment (inventory), operations and support, and…