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20-letter words containing a, e, g

  • bats-wing coral-tree — a small tree, Erythrina verspertilio, of tropical and subtropical Australia with red flowers and leaves shaped like the wings of a bat
  • beggar-your-neighbor — a children's card game for two, played with 52 cards, that is won when a player captures all of the cards.
  • belgian shepherd dog — a medium-sized well-proportioned dog of a breed that resembles an Alsatian in appearance and is often used as a sheepdog or a guard dog
  • bernese mountain dog — a strong sturdy dog of a breed with a bushy tail and a long silky black coat with reddish-brown and white markings, often used as a working farm dog
  • biogeochemical cycle — the cycle in which nitrogen, carbon, and other inorganic elements of the soil, atmosphere, etc. of a region are converted into the organic substances of animals or plants and released back into the environment
  • biological diversity — Biological diversity is the same as biodiversity.
  • biological half life — Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
  • biological half-life — the time required for half of a quantity of radioactive material absorbed by a living tissue or organism to be naturally eliminated
  • bismarck archipelago — a group of over 200 islands in the SW Pacific, northeast of New Guinea: part of Papua New Guinea. Main islands: New Britain, New Ireland, Lavongai, and the Admiralty Islands. Chief town: Rabaul, on New Britain. Pop: 566 610 (2000). Area: 49 658 sq km (19 173 sq miles)
  • black lung (disease) — a disease of the lungs caused by the inhalation of coal dust; anthracosis
  • blending inheritance — the blending of characteristics of the parents in the offspring, as in a pink flower that results from the mating of a red flower with a white one
  • blue ridge mountains — a mountain range in the eastern US, extending from West Virginia into Georgia: part of the Appalachian mountains. Highest peak: Mount Mitchell, 2038 m (6684 ft)
  • bolometric magnitude — the magnitude of a star derived either from the total energy that it radiates at all wavelengths or from the total energy of those of its wavelengths that are received on earth.
  • boulogne billancourt — a suburb of Paris, in N France.
  • boulogne-billancourt — an industrial suburb of SW Paris. Pop: 106 367 (1999)
  • brain fingerprinting — a technique in which sensors worn on the head are used to measure the involuntary brain activity of someone in response to certain images or pieces of evidence pertaining to a crime
  • branch target buffer — (processor)   (BTB) A register used to store the predicted destination of a branch in a processor using branch prediction?
  • break the glass plan — a plan that is put into operation in an emergency when all other options have been exhausted
  • breakerless ignition — electronic ignition.
  • bring home the bacon — If you bring home the bacon, you achieve what you needed to achieve.
  • brown lung (disease) — a chronic disease of the lungs caused by inhalation of fine textile fibers, esp. cotton; byssinosis
  • calcium permanganate — a violet, crystalline, deliquescent solid, Ca(MnO 4) 2 ⋅4H 2 O, used chiefly as a disinfectant and deodorizer.
  • california gold fern — an evergreen fern, Pityrogramma triangularis, growing from British Columbia to California, having the underside of the leaves covered with a deep yellow, powderlike substance.
  • carbohydrate loading — the practice of eating high amounts of carbohydrates, sometimes after a period of low carbohydrate intake, for several days immediately before competing in an athletic event, especially a marathon, in order to store glycogen in the body, thereby providing greater reserves of energy.
  • career limiting move — (jargon)   (CLM, Sun) Any action endangering one's future prospects of getting plum projects and raises, and possibly one's job. E.g. "His Halloween costume was a parody of his manager. He won the prize for "best CLM"." A severe bug discovered by a customer might be a "CLM bug".
  • carl friedrich gauss — (person)   A German mathematician (1777 - 1855), one of all time greatest. Gauss discovered the method of least squares and Gaussian elimination. Gauss was something of a child prodigy; the most commonly told story relates that when he was 10 his teacher, wanting a rest, told his class to add up all the numbers from 1 to 100. Gauss did it in seconds, having noticed that 1+...+100 = 100+...+1 = (101+...+101)/2. He did important work in almost every area of mathematics. Such eclecticism is probably impossible today, since further progress in most areas of mathematics requires much hard background study. Some idea of the range of his work can be obtained by noting the many mathematical terms with "Gauss" in their names. E.g. Gaussian elimination (linear algebra); Gaussian primes (number theory); Gaussian distribution (statistics); Gauss [unit] (electromagnetism); Gaussian curvature (differential geometry); Gaussian quadrature (numerical analysis); Gauss-Bonnet formula (differential geometry); Gauss's identity (hypergeometric functions); Gauss sums (number theory). His favourite area of mathematics was number theory. He conjectured the Prime Number Theorem, pioneered the theory of quadratic forms, proved the quadratic reciprocity theorem, and much more. He was "the first mathematician to use complex numbers in a really confident and scientific way" (Hardy & Wright, chapter 12). He nearly went into architecture rather than mathematics; what decided him on mathematics was his proof, at age 18, of the startling theorem that a regular N-sided polygon can be constructed with ruler and compasses if and only if N is a power of 2 times a product of distinct Fermat primes.
  • 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.
  • cassegrain telescope — an astronomical reflecting telescope in which incident light is reflected from a large concave paraboloid mirror onto a smaller convex hyperboloid mirror and then back through a hole in the concave mirror to form the image
  • celestial navigation — navigation by observation of the positions of the stars
  • 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
  • centrifugal spinning — the spinning of rayon filaments in a centrifugal box.
  • cerebral haemorrhage — bleeding from an artery in the brain, which in severe cases causes a stroke
  • châlons-en-champagne — a town in NE France, on the River Marne: scene of Attila's defeat by the Romans (451 ad). Pop: 47 339 (1999)
  • change a reservation — If you change a reservation, you move a booking to a different date because someone who has booked a room has informed you that they wish to stay there on a different date.
  • 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.
  • chemical engineering — Chemical engineering is the designing and constructing of machines that are needed for industrial chemical processes.
  • chemical fingerprint — a distinctive characteristic or pattern indicating the presence of a certain molecule, used to identify a chemical.
  • 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
  • chip scale packaging — (hardware)   (CSP) A type of surface mount integrated circuit packaging that provides pre-speed-sorted, pre-tested and pre-packaged die without requiring special testing. An example is Motorola's Micro SMT packaging. See also: chip-on-board, flip chip, multichip module, known good die, ball grid array.
  • chrono-logical order — the arrangement of things following one after another in time: Put these documents in chronological order.
  • clay-pigeon shooting — the activity of shooting clay pigeons
  • cleansing department — the department of a local authority that collects refuse
  • coalition government — a government containing members of two or more political parties
  • cognitive dissonance — an uncomfortable mental state resulting from conflicting cognitions; usually resolved by changing some of the cognitions
  • collective agreement — a negotiated agreement, which is not enforceable at law, between an employer and employees' representatives, covering rates of pay or terms and conditions of employment, or both
  • 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
  • collegiate institute — (in certain provinces) a large secondary school with an academic, rather than vocational, emphasis
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