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21-letter words starting with d

  • dacryocystorhinostomy — A surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.
  • dance to another tune — to alter one's actions or opinions as a result of changed conditions
  • darby and joan settee — a settee having a back resembling two chair backs.
  • dark-field microscope — ultramicroscope
  • darken someone's door — to visit someone
  • data parallel haskell — (language, parallel)   Adds Parallel Objects with arbitrary Dimension (PODs) and POD comprehensions to Haskell.
  • data set organization — (operating system, storage)   (DSORG) An IBM term for file structure. These include PS physical sequential, DA direct access, IS indexed sequential, PO partitioned (a library). This system dates from OS/360, and breaks down beginning with VSAM and VTAM, where it is no longer applied. Sequential and indexed data sets can be accessed using either a "basic" or a "queued" "access method." For example a DSORG=PS file can use either BSAM (basic sequential access method) or QSAM (queued sequential access method). It can also be processed as a direct file using BDAM. Likewise a library can be processed using BPAM (basic partitioned access method), BSAM, QSAM, or BDAM. DSORG and access method are somewhat, but not completely, orthogonal. The "basic" access method deals with physical blocks rather than records, and usually provides more control over the specific device. Each I/O operation using the "basic" access method reads or writes a single block. A "basic" read or write starts an asynchronous I/O operation, and the programmer is responsible for waiting for completion and checking for errors. The "queued" access method deals with logical records and provides blocking and deblocking services. It is "queued" because it provides read-ahead and write-behind services. While a program is processing records in one input block, for example, QSAM may be reading one or more blocks ahead. Queued "get" or "put" operations are synchronous as far as the programmer is concerned. The operation is complete when the next logical record has been successfully processed. EXCP (Execute Channel Program) is a lower-level method of accessing data. IBM manuals usually named "Data Administration Guide", e.g. SC26-4505-1 for MVS/ESA DFP 3.1, provide more detail about data set organizations and access methods.
  • dataflow architecture — a means of arranging computer data processing in which operations are governed by the data present and the processing it requires rather than by a prewritten program that awaits data to be processed
  • datamatic corporation — Honeywell
  • de-ontological ethics — the branch of ethics dealing with right action and the nature of duty, without regard to the goodness or value of motives or the desirability of the ends of any act.
  • dead from the neck up — stupid or unintelligent
  • death by misadventure — a possible verdict in a coroner's court, indicating that death was due to an accident not to a crimes or somebody's negligence
  • decompression chamber — a chamber in which the pressure of air can be varied slowly for returning people from abnormal pressures to atmospheric pressure without inducing decompression sickness
  • deep scattering layer — any of the stratified zones in the ocean which reflect sound during echo sounding, usually composed of marine organisms which migrate vertically from c. 250 to 800 m (c. 820 to 2,625 ft)
  • defender of the faith — the title conferred upon Henry VIII by Pope Leo X in 1521 in recognition of the King's pamphlet attacking Luther's doctrines and retained by subsequent monarchs of England
  • degradation of energy — the principle that during any irreversible process the total energy available to do work decreases.
  • delusions of grandeur — If someone has delusions of grandeur, they think and behave as if they are much more important or powerful than they really are.
  • demand-pull inflation — inflation in which rising demand results in a rise in prices.
  • democratic centralism — the Leninist principle that policy should be decided centrally by officials, who are nominally democratically elected
  • dendrochronologically — By the use of, or with reference to dendrochronology.
  • denominational school — a school associated with a particular religious denomination
  • deoxyribonucleic acid — DNA
  • department of defense — the department of the U.S. federal government charged with ensuring that the military capacity of the U.S. is adequate to safeguard the national security. Abbreviation: DOD.
  • department of justice — the department of the U.S. federal government charged with the responsibility for the enforcement of federal laws. Abbreviation: DOJ.
  • deployment descriptor — (programming)   (DD) A J2EE configuration file.
  • deprovincialization's — to make provincial in character.
  • designated employment — (in Britain) any of certain kinds of jobs reserved for handicapped workers under the Disabled Persons (Employment) Act 1944
  • desire under the elms — a play (1924) by Eugene O'Neill.
  • detoxification centre — a place that specializes in the treatment of alcoholism or drug addiction
  • development education — an area of study that aims to give pupils an understanding of their involvement in world affairs
  • developmental biology — the study of the development of multicellular organisms, including the study of the earliest stages of embryonic structure and tissue differentiation
  • devil's walking-stick — Hercules'-club (sense 1)
  • devil's-walking-stick — Hercules-club (def 2).
  • dew-point temperature — the temperature to which air must be cooled, at a given pressure and water-vapor content, for it to reach saturation; the temperature at which dew begins to form.
  • diapason normal pitch — a standard of pitch in which A above middle C is established at 435 vibrations per second.
  • dictionary definition — the meaning of a word as given in a dictionary or dictionaries
  • difference of opinion — disagreement
  • differential analyzer — an analog computer designed for solving certain differential equations.
  • differential calculus — the branch of mathematics that deals with differentials and derivatives.
  • differential equation — an equation involving differentials or derivatives.
  • differential geometry — the branch of mathematics that deals with the application of the principles of differential and integral calculus to the study of curves and surfaces.
  • differential operator — a function, usually expressed as a polynomial, that indicates linear combinations of the derivatives of the expression on which it operates.
  • differential quotient — derivative (def 6).
  • differential topology — the branch of topology that studies the properties of differentiable manifolds that remain invariant under diffeomorphisms.
  • differential windlass — a pair of hoisting drums of different diameter turning at the same rate, such that a pulley suspended below them on a line wound on the larger drum and unwound from the smaller drum is raised with mechanical advantage.
  • differential-quotient — something that has been derived.
  • diffusion coefficient — the rate at which a diffusing substance is transported between opposite faces of a unit cube of a system when there is unit concentration difference between them
  • digital videocassette — a videocassette containing magnetic tape used for high-fidelity digital recording or playback of video. Abbreviation: DVC.
  • direct inward dialing — (communications)   (DID) A service offered by telephone companies which allows the last 3 or 4 digits of a phone number to be transmitted to the destination exchange. For example, a company could have 10 incoming lines, all with the number 234 000. If a caller dials 234 697, the call is sent to 234 000 (the company's exchange), and the digits 697 are transmitted. The company's exchange then routes the call to extension 697. This gives the impression of 1000 direct dial lines, whereas in fact there are only 10. Obviously, only 10 at a time can be used. This system is also used by fax servers. Instead of an exchange at the end of the 234 000 line, a computer running fax server software and fax modem cards uses the last three digits to identify the recipient of the fax. This allows 1000 people to have their own individual fax numbers, even though there is only one 'fax machine'.
  • disassortative mating — the reproductive pairing of individuals that have traits more dissimilar than would likely be the case if mating were random (contrasted with assortative mating).

On this page, we collect all 21-letter words starting with letter D. It’s easy to find right word with a certain length. It is the easiest way to find 21-letter word that beginning with D to use in Scrabble or Crossword puzzles.

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