ExpertGlossary terms starting with D

2,757 terms

"Digital Chart of the World" (DCW) The first 1:1,000,000-scale digital basemap of the world. The DCW contains topologically based vector data digitized from the U.S.
°C - degrees Celsius.
D Dust
D channel In ISDN, the 16-kb/s segment of a 144-kb/s, full-duplex subscriber service channel that is subdivided into 2B+D channels, i.e.
D layer See D region, ionosphere.
D loop Abbreviation for displacement loop. Formed when a short stretch of RNA is paired with one strand of DNA.
D Region In solar-terrestrial terms, a daytime layer of the earth's ionosphere approximately 50 to 90 km in altitude.
D Spec Process specification.
D Star Measure of infrared sensor sensitivity.
D&C A procedure to remove tissue from the cervical canal or the inner lining of the uterus.
D&D Design and Development
D&T Detection and Tracking.
d'Alembert Betting System A system of betting where you increase your bet by one unit after a loss and decrease your bet by one unit after a win.
D-1MT A substance being studied in the treatment of melanoma and many other types of cancer.
D-20761 A synthetic luteinizing hormone-releasing hormone (LH-RH) antagonist that suppresses LH and sex steroid levels.
D-4 A framing standard for traditional time-division multiplexing, which standard describes user channels multiplexed onto a trunk that has been segmented…
D-A Digital-to-Analog
D-cycloserine (...SY-kloh-SER-een) A drug used to treat tuberculosis. It is also being studied in the treatment of pain and nerve problems (numbness, tingling) caused…
D-IFOG Depolarized- Interferometric Fiber Optic Gyro.
D-Level Depot Level (ILS term).
D-Prime (D') A statistical measure of how well a system can discriminate between a signal and a non-signal.
D-Star(D*) Synonym specific detectivity.
D-type patch bay A patch bay designed for patching and monitoring of unbalanced data circuits at rates up to 1 Mb/s.
D/V Demonstration and Validation.
D1 See channel bank.
D2 Projective (interceptor) in the Hyper-Velocity Gun program.
D3 See channel bank.
D4 See channel bank.
DA (1) Department of the Army. (2) Department of Administration. (3) Decision Analysis. (4) Developing Agency/Activity. (5) Data Administrator.
dA - dT tailing See complementary homopolymeric tailing.
da-huang (dah-hwong) The root of this plant has been used in some cultures to treat certain medical problems. It may have anti-inflammatory and anticancer effects.
DAA Designated Approval Authority (DD 5000 term).
DAASAT Direct Ascent Anti-Satellite.
DAB (Full term: single domain antibody ). Antibodies with only one (instead of two) protein chain derived from only one of the two domains of the normal…
dabbing Working a lure up and down in the same spot a dozen or more times in a bush, or beside a tree or other structure.
DAC (1) Days After Contract [Award]. (2) Department of the Army Civilian. (3) Directed Attack Characterization. (4) Deploy ACCS Component.
DAC (Digital to Analog Converter) Converts digital data to analog data.
DACA A substance being studied in the treatment of cancer. It is a type of topoisomerase inhibitor. Also called acridine carboxamide.
dacarbazine An anticancer drug that is a type of alkylating agent.
DACL (discretionary access control list) The part of an object's security descriptor that grants or denies specific users and groups permission to access the object.
dacliximab A monoclonal antibody that is being studied in the treatment of adult T-cell leukemia and in the treatment of cytopenia (low blood cell count).
daclizumab A monoclonal antibody that is being studied in the treatment of adult T-cell leukemia and in the treatment of cytopenia (low blood cell count).
Dacogen (DA-koh-jen) A drug that is used to treat myelodysplastic syndromes and is being studied in the treatment of other types of cancer.
DACS Divert and Attitude Control System.
dactinomycin An anticancer drug that is a type of antitumor antibiotic.
DAD Defense Acquisition Deskbook .
DAD (Digital Audio Disc) Another term for compact disc.
DADS Distributed Air Defense Study (1993).
DAE Defense Acquisition Executive.
daemon Abbreviation for disk and execution monitor. A procedure that is invoked without being called explicitly whenever an alteration, an addition, or a…
daemon thread Daemon threads are non-user threads. They are typically used to carry out low-priority tasks that should not take priority over the main task of the…
DAES Defense Acquisition Executive Summary.
DAF See: DNA amplification fingerprinting.
DAFS Direct Access File System. A file system based on virtual interface (VI) architecture, designed for narrow-sharing environments, that is, environments…
DAFS (Direct Access File System) "Direct Access File System" is a network file system similar toNFS and CIFS that allows applications to transfer data whilebypassing operating system…
DAG (Directed Acyclic Graph) A directed graph containing no directed cycles, i.e. closed directed loops. See also: Mathworld's definition.
DAGGR Depressed Altitude Guided Gun Round.
DAHQ Department of the Army Headquarters.
DAI Damage Assessment Indicator (targets).
daidzein An isoflavone found in soy products. Soy isoflavones are being studied in the prevention of cancer.
Daily (or Next-Day) Indexes Published (Platts, NGI, Dow Jones, SNL, ICE, NGW) price indices for commodities (gas or electricity) to be delivered the next day based on transactions…
Daily balance method with compounding According to this method, we calculate the interest charges for each balance by applying the “daily periodic rate” for that balance to the “daily…
Daily balance method without compounding According to this method, we calculate the interest charges for each balance by applying the “daily periodic rate” for that balance to the “daily…
Daily catch and possession limits Daily catch limits is the amount of fish, by species, that can be caught in one day.
Daily Climatological Report As the name indicates, this climatological product is issued daily by each National Weather Service office.
Daily Deals Usually transactions done on a day for delivery or settlement or both, the next day.
Daily Flood Peak The maximum mean daily discharge occurring in a stream during a given flood event.
Daily periodic rate (DPR) DPR stands for “Daily Periodic Rate.” This is a daily interest rate. The daily periodic rate or DPR for a given balance is equal to the APR on that…
Daily trading limit The daily trading limit is the most that the price of a futures contract can rise or fall in a single session before trading in that contract is stopped…
Daisy Chain A cable configuration in which internal and external SCSI devices such as hard drives, CDs, scanners, and tape drives are connected in a series to the…
DAL Defended Asset List. 72
DALR Dry Adiabatic Lapse Rate
dalteparin (dul-TEP-uh-rin) A drug used to prevent blood clots from forming or to treat blood clots that have formed in patients with cancer or other conditions.
dalteparin sodium (dul-TEP-uh-rin SOH-dee-um) A drug used to prevent blood clots from forming or to treat blood clots that have formed in patients with cancer or other…
Dalton A unit of measurement equal to the mass of a hydrogen atom, 1.67 x 10E-24 gram/L (Avogadro's number).
Dam A structure for impeding and controlling the flow of water in a water course, and which increases the water elevation to create the hydraulic head.
Dam Failure Catastrophic type of failure characterized by the sudden, rapid, and uncontrolled release of impounded water.
Dam failure hydrograph A flood hydrograph resulting from a dam breach prepared for a specific location downstream from the dam.
Dam foundation The excavated surface or undisturbed material upon which a dam is placed.
Dam safety deficiency A physical condition capable of causing the sudden uncontrollable release of reservoir water by partial or complete failure of a dam, appurtenant…
Dam safety issue Dam safety related issues and concerns are those which, if not adequately addressed could/would: 1 - Lead to a failure or malfunction reulting in an…
Dam tender The person responsible for the daily or routine operation and maintenance activities of a dam and its appurtenant structures.
DAMA Demand Assigned Multiple Access.
damages Money awarded to a person injured by the wrongful act of another person.
DAMBRK In hydrologic terms, the Dam Break Forecasting Model.
DAMD See: directed amplification of minisatellite DNA.
DAML+OIL A successor language to DAML and OIL that combines features of both; it is now âoutdatedâ because it was superseded by Web Ontology Language…
Damnum absque injuria Legally noncompensable loss.
Damper A movable plate used to control air flow; in a wood stove or fireplace, used to control the amount and direction of air going to the fire.
Damping Resistance which reduces vibration by energy absorption.
Damping ratio The ratio of the actual damping to the critical damping, critical damping being the minimum amount of damping which prevents free oscillatory vibration.
damselfly A small member of the dragonfly family.
DANASAT Direct Ascent Nuclear Anti-Satellite.
danazol A synthetic hormone that is a type of androgen and is used to treat endometriosis. It is being evaluated in the treatment of endometrial cancer.
dangle length Minimum length allowed for dangling arcs during the CLEAN process. CLEAN removes dangling arcs that are shorter than the dangle length.
dangling arc An arc having the same polygon on both its left and right sides and having at least one node that does not connect to any other arc.
dangling node The endpoint of a dangling arcnot connected to another arc.
dangling statement A bare, single "statement", without any braces, hanging off an if or while conditional. C allows them. Perl doesn't.
dangling threat Set of properties about the external environment for which there is no corresponding vulnerability and therefore no implied risk. [INFOSEC-99]
dangling vulnerability [A] set of properties about the internal environment for which there is no corresponding threat and, therefore, no implied risk. [INFOSEC-99]