D
Abbreviation of duodecimo, as adopted by the American Library Association.
Entries starting with D
483 entries.
D-pillar
nounAutomotive
The vertical support dividing a car's rear windscreen from its rear window (where the car has a central side window between the front and rear side windows; see C-pillar).
D-sub
an electrical connector with two or more rows of pins or sockets surrounded by a D-shaped metal shield
D2M
Initialism of direct-to-mobile (direct-to-smartphone); a technology, or a link using one of the technologies.
DA
nameRail equipment
The station code of Dhaka railway station in Bangladesh.
DAC
Acronym of digital-to-analog converter.
dado
nounCarpentry
A rectangular channel in a board cut across the grain.
daily
Something that is produced, consumed, used, or done every day.
daily driver
Any tagged or insured race car that is too slow to be used competitive racing.
daily-able
Being usable as a daily driver.
dairy cake
A type of cattle cake formulated specifically to meet the nutritional requirements of dairy cows.
dairy farmer
A farmer who maintains a herd of dairy cows for the production of milk.
daisy chain
A thing resembling a daisy chain (noun sense 1) in having several elements connected together, often in a circle.
daisy-chain
Especially of a computer device, peripheral, or other component: to be capable of being connected with other components in sequence.
daisywheel printer
A printer that operates by striking the page with moulded characters from a rotating circular arrangement, obsolete since the late 1980s.
Dakota
Out of air-to-ground ordinance.
DAMN
nounRobotics
Acronym of distributed architecture for mobile navigation.
damp
A gaseous product, formed in coal mines, old wells, pits, etc.
damp course
nounConstruction
A layer in a wall, foundation etc. which prevents moisture spreading into interior areas.
damp proofing
nounConstruction
treatment of a surface or structure to resist the passage of water in the absence of hydrostatic pressure.
damping
The reduction in the magnitude of oscillations by the dissipation of energy.
dan
A small truck or sledge used in coal mines.
dance
A repetitive movement used in communication between worker honey bees.
dandy
nounRail equipment
A horse-drawn railway carriage used on some branch lines.
dandy cart
nounRail equipment
A wagon in which a horse could rest and travel downhill on a gravity-worked railway, before hauling wagons back up the incline.
danger
nounRail equipment
The stop indication of a signal (usually in the phrase "at danger").
danger signal
nounRail equipment
A signal set at danger and showing a red light or other stop indication, which a train driver must not pass until it changes or until manually cleared past the signal by a dispatcher.
DAO
Initialism of de-asphalted oil, a crude oil refinery process stream.
dap
nounCarpentry
A notch cut in one timber to receive another.
dark territory
nounRail equipment
A section of railroad track not controlled by signals.
Darlington
Ellipsis of Darlington pair.
Darlington pair
A pair of transistors with the emitter of one connected to the base of the other and the collectors connected together, acting as a transistor with greater amplification.
darn
verbManufacturing
To repair by stitching with thread or yarn, particularly by using a needle to construct a weave across a damaged area of fabric.
dart
nounManufacturing
A fold that is stitched on a garment.
Darth Vader
A British Rail Class 460 train.
darting
nounManufacturing
The use of darts (folds stitched on a garment).
dashcam
nounAutomotive
A digital video recorder mounted on the dashboard of a vehicle or elsewhere inside the vehicle to record occurrences in the vicinity, such as traffic accidents that the vehicle has been involved in, to provide evidence for criminal prosecutions, insurance claims, etc.
DAT
Digital Audio Tape, a digital data storage tape format using a dual-spooled cartridge and magnetic tape, used for digital audio and data storage.
data
Ellipsis of mobile data (“digital information transmitted using the cellular telephone network rather than Wi-Fi”).
data rate
The fee that a cell phone customer is charged for data traffic (sending and receiving data).
data set
A modem that connects a device such as a teletype to an ordinary telephone.
data terminal equipment
an end instrument that converts user information into signals or reconverts received signals.
datapad
A tablet computer, a personal mobile device.
Datex2
a data exchange standard developed for information exchange between traffic management centres
datum
nounSurveying
A point, line, plane, or surface with reference to which positions (such as elevations) are measured or indicated. (Examples include a permanent benchmark in leveling or mean sea level in a topographical survey).
daughterboard
A circuit board that is an extension of a motherboard or other card.
davit
nounConstruction
A crane, often working in pairs and usually made of steel, used to lower things over an edge of a long drop off, such as lowering a maintenance trapeze down a building or launching a lifeboat over the side of a ship.
Davy lamp
A miners' lamp or safety lamp used in coal mines to prevent explosions.
Dawes resolution limit
A criterion for a telescope's resolving power, representing the minimum angular separation between two stars that a human observer can distinguish as separate objects.
dawn chorus
Radio interference sometimes experienced at sunrise.
day letter
A telegram sent during the day for slightly deferred delivery on the same day, cheaper than a fast telegram, typically with a minimum charge for 50 words or less.
day level
A level driven from the surface.
daycoach
nounRail equipment
A normal railway car with seats, but no sleeping arrangements.
DB
nameRail equipment
Initialism of Deutsche Bahn (German Railways). Previously used by its predecessor, Deutsche Bundesbahn.
dc
nounManufacturing
Initialism of double crochet.
DCE
Initialism of data circuit-terminating equipment.
DCFC
nounAutomotive
Initialism of DC fast charge, a method of recharging electric vehicle batteries.
DCH
Initialism of dedicated channel (in UMTS).
DCIM
Abbreviation of digital camera image(s).
DCRS
Initialism of dipole coil resonance system.