BMDA measure of the amount of minerals (mostly calcium and phosphorous) contained in a certain volume of bone.
BMD Element Program Manager (PM)A highly qualified individual responsible for day-to-day management and execution of a BMD element program consistent with PM authorities and…
BMD Event AssessmentAn evaluation of information that determines the potential or actual nature and objectives of an attack for the purpose of providing information for…
BMD Event ValidationThe human evaluation of whether an observed event is real or false. It is a statement of validity of a warning event determined by a human analysis of…
BMDNBallistic Missile Defense Network. Encompasses the mission-oriented local area and wide area networks, facilities, hardware, software, network control and…
BMDOOBSOLETE. See Ballistic Missile Defense Organization.
BMDOCOBSOLETE. See Ballistic Missile Defense Operations Center.
BMDOICAOBSOLETE. See BMDO Independent Cost Assessment.
BodyThe main part of an email message containing the actual, arbitrary data such as text or images.
Body copythe 'meaty' textual content of a web page. Body copy refers to text visible to users, doesn't include graphical content, navigation, or information hidden…
BoldA way to make words appear in a bolder font. Words that appear in a bolder font are more likely to be read by humans that are scanning a page.
Boltzmann's constant (k)The number that relates the average energy of a molecule to its absolute temperature. Note: Boltzmann's constant is approximately 1.
BondA long-term debt instrument with the promise to pay a specified amount of interest and to return the principal amount on a specified maturity date.
bondingIn electrical engineering, the process of connecting together metal parts so that they make low resistance electrical contact for direct current and lower…
bookmarkA link to a Web site or page previously visited.
bookmark folderA folder in the Bookmark Bar containing bookmarks.
BookmarksMost browsers come with the ability to bookmark your favorite pages. Many web based services have also been created to allow you to bookmark and share…
BooleanBoolean logic (named for the British-born Irish mathematician George Boole) is way to express relationships in logic arguments using the following three…
Boolean contextA special kind of "scalar context" used in conditionals to decide whether the "scalar value" returned by an expression is "true" or "false".
Boolean expressionA type of expression that reduces to a true or false (logical) condition. A Boolean expression contains logical expressions (e.g.
Boolean functionA mathematical function that describes Boolean operations. 2. A switching function in which the number of possible values of the function and each of its…
Boolean logicA method of searching electronic information systems that uses specific terms and symbols to refine a search and improve the chances of obtaining…
Boolean operationAny operation in which each of the operands and the result take one of two values.
Boolean SearchThe term 'Boolean' refers to a system of logic developed by an early computer pioneer, George Boole.
Boolean Search or Boolean QueryA form of logical comparison. Boolean operators let you define whether multiple search terms are matched within a text block.
boost classA specification that can influence the relative rank of a document in the search results.
Boost Defense Segment (BDS)The portion of the BMDS that defeats ballistic missiles in the period of flight prior to the termination of powered flight.
Boost PhaseThe first phase of a ballistic missile trajectory during which it is being powered by its engines.
Boost Segment DefenseThe first phase of a ballistic missile trajectory during which it is being powered by its engines.
Boost Surveillance and Tracking System (BSTS)OBSOLETE. An Air Force sensor system in high earth orbit used for early warning, tracking of ballistic missiles, and attack assessment.
boost wordA word that can influence the relevant rank of a document in the search results.
BoosterIn medicine, refers to a vaccination given after a previous vaccination. A booster helps maintain or increase a protective immune response.
BoostingBoosting may be used to alter the relevancy value of a document compared to other documents in a search index, typically because it is perceived to be a…
Boot Configuration DataA data store that contains boot configuration parameters and controls how the operating system is started beginning with Windows Vista or Windows Server…
boot partitionThe partition that contains the Windows operating system and its support files.
Boot SectorThe very first sector on a hard drive which contains the computer code (boot strap loader) necessary for the computer to start up and the partition table…
Boot Sector VirusA virus that plants itself in a systems boot sector and infects the master boot record.
boot upTo take some kind of assenting action to initiate computer bootup, e.g., to turn on the primary power (often referred to as initiating a cold bootup) or…
Bootable Array SupportThe ability to make the system boot from a RAID array instead of from a standalone (single) disk.
bootstrapA technique or device designed to bring about a desired state by means of its own action. 2.
bootstrap actionA user-specified default or custom action that runs a script or an application on all nodes of a job flow before Hadoop starts.
bootstrap classesClasses that make up the Java Platform Core Application Programming Interface (API), such as those found in the java.lang, java.io and java.io packages.
bootupIn computer science, the initial sequence of events (usually preprogrammed in firmware present in the computer) that are necessary to start a computer; i.
border arcsThe arcs that create the outer edge boundary of a polygon coverage. In LIBRARIAN, the tile boundary arcs that split a polygon coverage into tiles.
boresight1. The physical axis of a directional antenna. 2. To align a directional antenna, using either an optical procedure or a fixed target at a known location.
BotRobot. Software automaton, used to play and advance a character without human assistance or supervision.
Botnet (also zombies)A collection of computers subject to centralized remote control by an outside party, usually without the knowledge of the owners, using surreptitiously…
Bottom-Up Review (BUR)A comprehensive review, initiated in March 1993, of the nations defense strategy, force structure, modernization, infrastructure, and foundations.
bounceTo return, to the sender, e-mail that is, for whatever reason, undeliverable to its intended destination.
bounce messageA non-delivery receipt that is sent to an e-mail sender when a message cannot be delivered to the intended recipient temporarily or permanently.
boundThe upper or lower limit in a permitted range of values. [Exchange 2007]
bound modeIn an optical fiber, a mode that (a) has a field intensity that decays monotonically in the transverse direction everywhere external to the core and (b)…
boundary[In security,] Software, hardware, or a physical barrier that limits access to a system or part of a system. [INFOSEC-99] 2.
boundary errorErrors that arise from programming mistakes made at the edges of a problem - indexing off the edge of an array, dealing with no items of data, loop…
Boundary matchThe ability to limit a query term/phrase to the start and/or end of an indexed field/parameter.
boundary networkA logical portion of a network that can be accessed by computers that are in the restricted network or the secure network.
Boundary ProtectionMonitoring and control of communications at the external boundary between information systems completely under the management and control of the…
Boundary RouterA boundary router is located at the organizations boundary to an external network.
bounded repetitionRepetition where the statements within a loop's body are performed a fixed number of times and the number of times is established when the loop is started.