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20-letter words containing d

  • cartesian coordinate — Usually, Cartesian coordinates. a member of a system of coordinates for locating a point on a plane (Cartesian plane) by its distance from each of two intersecting lines, or in space by its distance from each of three planes intersecting at a point.
  • case based reasoning — (artificial intelligence)   (CBR) A technique for problem solving which looks for previous examples which are similar to the current problem. This is useful where heuristic knowledge is not available. There are many situations where experts are not happy to be questioned about their knowledge by people who want to write the knowledge in rules, for use in expert systems. In most of these situations, the natural way for an expert to describe his or her knowledge is through examples, stories or cases (which are all basically the same thing). Such an expert will teach trainees about the expertise by apprenticeship, i.e. by giving examples and by asking the trainees to remember them, copy them and adapt them in solving new problems if they describe situations that are similar to the new problems. CBR aims to exploit such knowledge. Some key research areas are efficient indexing, how to define "similarity" between cases and how to use temporal information.
  • casing head pressure — The casing head pressure is the pressure on the casing, which is measured at the wellhead.
  • cat's-tail speedwell — a widely cultivated Eurasian plant, Veronica spicata, of the figwort family, having blue flowers in long, spikelike clusters.
  • catherine de medicis — (Caterina de' Medici) 1518–89, queen of Henry II of France (mother of Francis II, Charles IX, and Henry III).
  • catherine de' medici — 1519–89, queen of Henry II of France; mother of Francis II, Charles IX, and Henry III of France; regent of France (1560–74). She was largely responsible for the massacre of Protestants on Saint Bartholomew's Day (1572)
  • cavendish experiment — the experiment, conducted by Henry Cavendish, that determined the constant of gravitation by using a torsion balance and measuring the torsion produced by two masses placed at given distances from the masses on the balance.
  • central bedfordshire — a unitary authority of S central England. Pop: 252 100 (2007 est). Area: 712 sq km (275 sq miles)
  • central india agency — a former group of 89 states in India, under the supervision of a British political agent until 1947: most important were Indore, Bhopal, and Rewa
  • certified accountant — (in Britain) a member of the Chartered Association of Certified Accountants, who is authorized to audit company accounts
  • change-speed gearbox — A change-speed gearbox is a set of movable or constant gears which allows the speed ratio between input and output shafts to be changed either manually or automatically.
  • chapter of accidents — a series of misfortunes
  • chartered accountant — (in Britain) an accountant who has passed the professional examinations of the Institute of Chartered Accountants in England and Wales, the Institute of Chartered Accountants of Scotland, or the Institute of Chartered Accountants in Ireland
  • chauffeur-driven car — a car driven by a chauffeur
  • checkerboard pattern — checked pattern that looks like a draughtboard
  • chemically dependent — addicted to a drug or drugs
  • chief superintendent — an officer of senior rank in a British police force or other similarly organized force
  • child support agency — the British government agency concerned with the welfare of children
  • child-abuse register — (in Britain) a list of children deemed to be at risk of abuse or injury from their parents or guardians, compiled and held by a local authority, area health authority, or NSPCC Special Unit
  • childhood sweetheart — a boyfriend or girlfriend from an early stage of life
  • chromatic adaptation — the alteration by photosynthesizing organisms of the proportions of their photosynthetic pigments in response to the intensity and colour of the available light, as shown by algae in the littoral zone, which change from green to red as the zone is descended
  • chromaticity diagram — a diagram in which values of two chromaticity coordinates are marked on a pair of rectangular axes, a point in the plane of these axes representing the chromaticity of any colour
  • chrono-logical order — the arrangement of things following one after another in time: Put these documents in chronological order.
  • clay-colored sparrow — a sparrow, Spizella pallida, of the interior of North America, having buff, brown, and white plumage with a pale-gray breast.
  • cleansing department — the department of a local authority that collects refuse
  • codex juris canonici — the official code of canon law in force in the Roman Catholic Church; introduced in 1918 and revised in 1983
  • cognitive dissonance — an uncomfortable mental state resulting from conflicting cognitions; usually resolved by changing some of the cognitions
  • coincident indicator — an economic indicator, as gross national product, that typically fluctuates in correlation with the total economy.
  • cold-weather payment — (in Britain) a payment made by the government to people on low incomes when the temperature falls below a certain level for a specific number of days
  • college of cardinals — the collective body of cardinals having the function of electing and advising the pope
  • college of education — a professional training college for teachers
  • colloidal suspension — a mixture having particles of one component, with diameters between 10 −7 and 10 −9 metres, suspended in a continuous phase of another component. The mixture has properties between those of a solution and a fine suspension
  • colorado blue spruce — blue spruce.
  • combination sandwich — a big sandwich with a mixed filling
  • come off second best — to be defeated in competition
  • commissioned officer — a military officer holding a commission, such as Second Lieutenant in the British Army, Acting Sub-Lieutenant in the Royal Navy, Pilot Officer in the Royal Air Force, and officers of all ranks senior to these
  • commissioning editor — a person who commissions authors to write books and magazine articles
  • common lodging house — a cheap lodging house
  • comparative judgment — any judgment about whether there is a difference between two or more stimuli
  • compare and contrast — note similarities, differences
  • compensatory damages — sum paid for a loss
  • complaints procedure — a prescribed method of lodging a complaint to an institution
  • complementary strand — either of the two chains that make up a double helix of DNA, with corresponding positions on the two chains being composed of a pair of complementary bases.
  • complete blood count — a diagnostic test that determines the exact numbers of each type of blood cell in a fixed quantity of blood. Abbreviation: CBC.
  • complex carbohydrate — a carbohydrate, as sucrose or starch, that consists of two or more monosaccharide units.
  • computing dictionary — Free On-line Dictionary of Computing
  • condensation nucleus — nucleus (def 5).
  • conditioned response — a response that is transferred from the second to the first of a pair of stimuli. A well-known Pavlovian example is salivation by a dog when it hears a bell ring, because food has always been presented when the bell has been rung previously
  • conditioned stimulus — a stimulus to which an organism has learned to make a response by classical conditioning
  • conductive education — an educational system, developed in Hungary by András Petö, in which teachers (conductors) teach children and adults with motor disorders to function independently, by guiding them to attain their own goals in their own way
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