downstreamThe region extending in a 3' direction from a gene.
Downstream faceThe inclined surface of a dam away from the reservoir. See face.
downstream processingA general term for biotechnological processes which follow the biology, i.e. fermentation of a micro-organism or growth of a plant.
Downstream SlopeThe slope or face of the dam away from the reservoir water. This slope requires some kind of protection (e.g.
DowntickWhen a security sells at a lower price than its previous sale price, the drop in value is called a downtick.
downtimeThe interval during which a functional unit is inoperable.
Downtown VegasThe older area of Vegas. The casinos in Downtown Vegas generally offer better rules for the player, and the phrase is used to refer to blackjack games…
DownwashA deflection of air downward relative to an object that causes the deflection.
downwelling longwave irradianceThe total diffuse and direct radiant energy, at wavelengths longer than approximately 4 µm, that is being emitted downwards.
Downwelling RadiationThe component of radiation directed toward the earth's surface from the sun or the atmosphere, opposite of upwelling radiation.
downwelling shortwave irradianceThe total diffuse and direct radiant energy that comes from some continuous range of directions, at wavelengths between 0.
Downwind Wind TurbineA horizontal axis wind turbine in which the rotor is downwind of the tower.
DownzoningA change in zoning classification to less intensive use and/or development.
Dox-SLA form of the anticancer drug doxorubicin that is contained in very tiny, fat-like particles.
doxazosin(dox-AY-zoh-sin) A drug used to treat high blood pressure and urinary problems caused by an enlarged prostate.
doxazosin mesylate(dox-AY-zoh-sin MEH-zih-layt) A drug used to treat high blood pressure and urinary problems caused by an enlarged prostate.
doxercalciferolA substance being studied in the prevention of recurrent prostate cancer. It is a type of vitamin D analog.
Doxil(DOK-sil) A form of the anticancer drug doxorubicin that is contained in very tiny, fat-like particles.
doxorubicin(DOK-soh-ROO-bih-sin) A drug that is used to treat many types of cancer and is being studied in the treatment of other types of cancer.
doxorubicin hydrochloride(DOK-soh-ROO-bih-sin HY-droh-KLOR-ide) A drug that is used to treat many types of cancer and is being studied in the treatment of other types of cancer.
doxorubicin hydrochloride liposome(DOK-soh-ROO-bih-sin HY-droh-KLOR-ide LY-poh-SOME) A form of the anticancer drug doxorubicin that is contained in very tiny, fat-like particles.
DoxycyclineAn antibiotic drug used to treat infection.
Dozen BetA bet on one of the sequences of 12 numbers on the layout.
DPAA type of power of attorney. A power of attorney is a legal document that gives one person (such as a relative, lawyer, or friend) the authority to make…
DPI (Dots Per Inch)The measurement of the resolution of display in printing systems. A typical CRT screen provides 96 dpi, which provides 9,216 dots per square inch (96x96).
DRDiminishing Returns. Used to describe something that reduces slowly over time on consecutive repetitions of the same action.
DR (delivery receipt)A notice confirming that a message was delivered to its intended recipient. [Exchange 5.5]
DR (Disaster Recovery)In virtual environments the setup of new systems and recovery of operating systems are much simpler than with standard recovery methods.
DraftA signed, written order by which one party (the drawer) instructs another party (the drawee) to pay a specified sum to a third party (the payee), at sight…
Draft DiverterA door-like device located at the mouth of a fireplace chimney flue for controlling the direction and flow of the draft in the fireplace as well as the…
Draft environmental impact statement (DEIS)A draft statement of environmental effects. Section 102 of the National Environmental Policy Act requires a DEIS for all major federal actions.
Draft HoodA device built into or installed above a combustion appliance to assure the escape of combustion byproducts, to prevent backdrafting of the appliance, or…
Draft RecordA draft record is a preliminary version of a record before it has been completed, finalized, accepted, validated or filed.
Draft sequenceThe sequence generated by the HGP as of June 2000 that, while incomplete, offers a virtual road map to an estimated 95% of all human genes.
DraftingWhen two or more race cars run closely behind each other, sometimes nearly touching.
DragDevice on fishing reels that allows line to pay out under pressure, even though the reel is engaged; set correctly, it ensures against line breakage.
Drag-and-DropThe movement of on-screen objects by dragging them with the mouse, and dropping them in another place.
draggingThe act of modifying all or part of the display on a monitor by selecting some object and moving the pointing device such that the displayed object moves…
Dragon Handthis is hand that is dealt to an empty seat at the table.
DrainIn medicine, to remove fluid as it collects; or, a tube or wick-like device used to remove fluid from a body cavity, wound, or infected area.
Drain LayerA layer of permeable material in a dam to relieve pore pressure or to facilitate draining fill. See also, "Blanket"
Drainage AreaThe area which drains to a particular point on a river or stream. The drainage area of a stream at a specified location is that area, measured in a…
Drainage BasinAll of the area drained by a river system. The drainage basin is a part of the surface of the earth that is occupied by a drainage system, which consists…
Drainage BlanketA layer of pervious material placed directly over the foundation material to facilitate drainage of the foundation and/or embankment.
Drainage curtainA line of vertical wells or boreholes to facilitate drainage of the foundation and abutments and to reduce water pressure (also called drainage wells or…
Drainage DensityThe relative density of natural drainage channels in a given area. It is usually expressed in terms of miles of natural drainage or stream channel per…
Drainage DivideThe boundary line, along a topographic ridge or along a subsurface formation, separating two adjacent drainage basins.
Drainage layerA layer of pervious material in an earthfill dam to relieve pore pressures or to facilitate drainage of the fill.
Drainage systemCollection of surface and/or subsurface drains, together with structures and pumps, used to remove surface or ground water.
Drainage well (relief well)Vertical wells or boreholes downstream of, or in downstream shoulder of, an embankment dam to collect and control seepage through or under the dam and so…
Drainback (Solar) SystemsA closed-loop solar heating system in which the heat transfer fluid in the collector loop drains into a tank or reservoir whenever the booster pump stops…
Draindown (Solar) SystemsAn open-loop solar heating system in which the heat transfer fluid from the collector loop and the piping drain into a drain whenever freezing conditions…
DrainerA valley or basin from which air drains continuously during nighttime rather than becoming trapped or pooled.
Drains (Relief Wells)A vertical well or borehole, usually downstream of impervious cores, grout curtains or cutoffs, designed to collect and direct seepage through or under a…
DRAMDynamic Random Access Memory, a memory technology which is periodically refreshed or updated as opposed to static RAM chips which do not require…
drapeA perspective or panoramic rendering of two-dimensional features superimposed on a surface.
DrawSame as to hit. Taking additional cards in an attempt to get closer to a total of 21.
Draw DeadTrying to make a hand that, even if made, will not win the pot. If you're drawing to make a flush, and your opponent already has a full house, you are…
Draw-down CurveA method used to encapsulate the overall performance of a BMD system that plots the probability of survival on the vertical axis versus the number of…
DrawdownLowering a lake level for a specific purpose.
Drawdown CurveA method used to encapsulate the overall performance of a BMD system that plots the probability of survival on the vertical axis versus the number of…
DraweeThe person (or bank) who is expected to pay a check or draft when it is presented for payment.
DREAn examination in which a doctor inserts a lubricated, gloved finger into the rectum to feel for abnormalities. Also called digital rectal examination.
DreamweaverPopular web development and editing software offering a what you see is what you get interface. See also: Dreamweaver official site
DredgeTo dig under water. A machine that digs under water.
DredgingThe scooping, or suction of underwater material from a harbor, or waterway. Dredging is one form of channel modification.