DetectionThe first of five Early Warning System components consisting of the processes and equipment necessary to collect information about the threatening event…
Detection and Identification RateThe rate at which individuals, who are in a database, are properly identified in an open-set identification (watchlist) application.
Detection Error Trade-off (DET) CurveA graphical plot of measured error rates, as illustrated below. DET curves typically plot matching error rates (false non-match rate vs.
Detection Limitthe lowest quantity of a substance that can be distinguished from the absence of that substance (a blank value) within a stated confidence limit.
detectivityThe reciprocal of noise equivalent power.
DetectorA passive IR, visible, UV detector turns photons into an electrical signal. The IFOV of the detector is its solid angular sub-tense.
Detention BasinsDetention basins are normally dry, but are designed to detain surface water temporarily during, and immediately after a runoff event.
Detention damA dam built to store streamflow or surface runoff, and to control the release of such stored water.
Detention hearingUnder the Bail Reform Act, a hearing may be held in cases involving defendants who are charged with serious felonies or whose record indicates that they…
Detention Ponds(Extended Detention Basins) An area surrounded by an embarkment, or an excavated pit, designed to temporarily hold stormwater long enough to allow…
Detention StorageThe volume of water, other than depression storage, existing on the land surface as flowing water which has not yet reached the channel.
detergentSubstance which lowers the surface tension of a solution, improving its cleaning properties.
determinate growthGrowth determined and limited in time, with a bud or flower terminating the growth of the main axis. Once established, it is usually irreversible.
determinationProcess by which undifferentiated cells in an embryo become committed to develop into specific cell types, such as neurons, fibroblasts or muscle cells.
determinedDescribing embryonic tissue at a stage when it can develop only as a certain kind of tissue.
deterministic routingIn a switched network, switching in which the routes between given pairs of nodes are pre-programmed, i.e., are determined, in advance of transmission.
deterministic transfer modeAn asynchronous transfer mode in which the maximum information transfer capacity of a telecommunication service is provided throughout a call.
Detonating cordRound, flexible textile, or plastic cord with a center core of high explosive. A common use is to tie in shots using nonelectric delays (MS connectors)…
DetonationPractically instantaneous decomposition or combustion of an unstable compound, with tremendous increase in volume.
DetonatorA device to start an explosion, as a fuse or cap.
DetoxificationA process in which the body rids itself of a drug (or its metabolites). During this period, withdrawal symptoms can emerge that may require medical…
detoxify(dee-TOX-ih-fy) To make something less poisonous or harmful. It may refer to the process of removing toxins, poisons, or other harmful substances from the…
DetritusLoose natural materials, such as rock fragments or organic particles, that result directly from disintegration of rocks or organisms.
DeuteriumA special form of hydrogen (an isotope called "heavy hydrogen") that has a neutron as well as a proton in its nucleus.
DevaluationDevaluation is a deliberate decision by a government or central bank to reduce the value of its own currency in relation to the currencies of other…
DeveloperThe person or organization that manufacturers a Target of Evaluation [ITSEC].
Developing Gale/StormIn the high seas and offshore forecasts, a headline used in the warnings section to indicate that gale/storm force winds are not now occurring but are…
developmentThe sum total of events that contribute to the progressive elaboration of an organism. The two major aspects of development are growth and differentiation.
development environment1. The set of procedures, methods, tools and standards used during system development. See also: Operational Environment [CESG]. 2.
development processThe set of phases and tasks whereby a Target of Evaluation is constructed, translating requirements into actual hardware and software [ITSEC].
Development RightsDevelopment rights give property owners the right to develop land in ways that comply with local land use regulation.
Development Test (DT)Test conducted by the development test organization to achieve specified test objectives. It may be a complete test, a subtest, or a phase of a test.
Development Test and Evaluation (DT&E)Test and evaluation conducted to measure progress, usually of component/subsystems, and the proofing of manufacturing processes and controls and to assist…
Development Test I (DT I)A series of tests conducted during the demonstration and validation phase. Components, subsystems, or the total (or full) system are examined to determine…
Development Test II (DT II)A series of tests, normally during EMD, which provide the technical data necessary to assess whether the system is ready for low-rate initial or full…
developmental and reproductive effectsEffects caused by some physical, chemical, or biological agent, such as radiation, to the formation and development of a fetus, that results in one or…
developmental stage(dee-VEH-lup-MEN-tul stayj) The physical, mental, and emotional stages a child goes through as he or she grows and matures.
deviation1. An alteration from the typical form, function or behaviour. Mutation or stress are the common reasons behind deviation. 2.
Deviation CriteriaLimits established beyond which a Program Manager may not trade-off cost, schedule, or performance without authorization from the milestone decision…
deviation ratioIn a frequency modulation system, the ratio of the maximum frequency deviation of the carrier to the maximum modulating frequency of the system under…
Deviator stressThe difference between the major and minor principal stresses in a triaxial test.
deviceA whiz-bang hardware gizmo (like a disk or tape drive or a modem or a joystick or a mouse) attached to your computer, that the "operating system" tries to…
device certificateIn cryptography, a public key certificate or an attribute certificate, issued by a device manufacturer, tying the identity of the device to its attributes.
device credentialsAuthentication information provided from a device to gain access to the enterprise network. [Exchange 2003]
device driverSoftware that enables hardware or devices (such as a printer, mouse, or keyboard) to work with your computer.
device passwordA passcode that a user enters on a mobile device that supports the Exchange ActiveSync protocol.
Devolution of CommandMinimal essential operational capability to perform C2 provided in an orderly and timely fashion to a duly authorized successor.
DewMoisture in the air that condenses on solid surfaces when the air is saturated with water vapor.
Dew pointThe temperature to which air with a given quantity of water vapor must be cooled to cause condensation of the vapor in the air.
Dew Point DepressionThe difference in degrees between the air temperature and the dew point.
Dew Point FrontA narrow zone (mesoscale feature) of extremely sharp moisture gradient and little temperature gradient. It separates moist air from dry air.
DewateringThe separation of free water from the solids portion of spent mash, sludge, or whole stillage by screening, centrifuging, filter pressing, or other means.
DEWLDirected Energy Weapon, Laser (thermal or impulse).
DEWPOn a buoy report, the dewpoint temperature taken at the same height as the air temperature measurement.
DewpointThe temperature to which air must be cooled, at constant pressure and water vapor content, in order for saturation or condensation to occur; the…
DEXAAn imaging test that measures bone density (the amount of bone mineral contained in a certain volume of bone) by passing x-rays with two different energy…
DEXA scanAn imaging test that measures bone density (the amount of bone mineral contained in a certain volume of bone) by passing x-rays with two different energy…
dexamethasoneA synthetic steroid (similar to steroid hormones produced naturally in the adrenal gland).
dexmethylphenidateA substance being studied in the treatment of fatigue and nervous system side effects caused by chemotherapy.
dexrazoxane(DEKS-ruh-ZOK-sane) The active ingredient in a drug used to treat severe side effects caused by certain anticancer drugs.
dexrazoxane hydrochloride(DEKS-ruh-ZOK-sane HY-droh-KLOR-ide) A drug used to treat severe side effects caused by certain anticancer drugs.
dextrinAn intermediate polysaccharide compound resulting from the hydrolysis of starch to maltose by amylase enzymes.
dextroamphetamine-amphetamineA combination of drugs used as a treatment for attention deficit hyperactivity disorder (ADHD) and narcolepsy (a sleep disorder).
dextromethorphan acetic acid(DEK-stroh-meh-THOR-fan uh-SEE-tik A-sid) An anticancer drug that is a type of angiogenesis inhibitor.
DFMOA substance being studied in the treatment of cancer. Also called difluoromethylornithine.
DFSDistributed File System. A Windows file management system that allows data scattered across multiple servers to be treated as a single group.
DFS (Distributed File System)DFS allows administrators to group shared folders located on different servers by transparently connecting them to one or more DFS namespaces.
dGTPAbbreviation for deoxyguanosine 5'-triphosphate. dGTP is required for DNA synthesis since it is a direct precursor molecule. See: guanosine, guanylic acid.
DHA-paclitaxel(...PA-klih-TAK-sil) A combination of DHA (a natural fatty acid) and paclitaxel (an anticancer drug) being studied in the treatment of cancer.
DHTA hormone made from testosterone in the prostate gland, testes, and some other tissues. It is needed for the formation of male sex characteristics.
dHTMLAbbreviation for dynamic Hypertext Markup Language. A form of HTML used to create Web-page content that, as perceived by the viewer, appears to change…
Di GroupA basic group of Pulse Code Modulation (PCM) channels assembled by Time Division Multiplex. In the United States it usually consists of 24 channels at 1.
di-deoxynucleotide(Abbreviations: ddNTP,didN). A synthetic deoxynucleotide that lacks a 3'-hydroxyl group, and is thus unable to form the 3'?
di-dgA-RFB4An anticancer drug that is a combination of a monoclonal antibody (RFB4) and an immunotoxin (dgA).