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20-letter words containing e, r

  • carry off one's feet — to fill with enthusiasm
  • 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.
  • 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
  • cast a pall over sth — If something unpleasant casts a pall over an event or occasion, it makes it less enjoyable than it should be.
  • cast the first stone — the hard substance, formed of mineral matter, of which rocks consist.
  • catastrophic failure — Catastrophic failure is sudden and complete failure which cannot be put right.
  • catastrophic illness — A catastrophic illness is a major health event that takes place during a particular period of time, such as a heart attack, stroke, or cancer.
  • 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)
  • cavalleria rusticana — an opera (1890) by Pietro Mascagni.
  • 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.
  • cellular respiration — the oxidation of organic compounds that occurs within cells, producing energy for cellular processes.
  • cellulose triacetate — a triacetic ester of cellulose characterized by its resistance to most solvents, used chiefly in the manufacture of textile fibers.
  • center of percussion — the point on a rigid body, suspended so as to be able to move freely about a fixed axis, at which the body may be struck without changing the position of the axis.
  • 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
  • centre three-quarter — either of two middle players on the three-quarter line
  • 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
  • certificate of stock — stock certificate.
  • certified accountant — (in Britain) a member of the Chartered Association of Certified Accountants, who is authorized to audit company accounts
  • 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.
  • channel service unit — (communications)   (CSU) A type of interface used to connect a terminal or computer to a digital medium in the same way that a modem is used for connection to an analogue medium. A CSU is provided by the communication carrier to customers who wish to use their own equipment to retime and regenerate the incoming signals. The customer must supply all of the transmit logic, receive logic and timing recovery in order to use the CSU, whereas a digital service unit DSU performs these functions.
  • chapter of accidents — a series of misfortunes
  • character repertoire — (character)   The set of all characters onto which a coded character set maps integers (code positions). For example, consider these two simple coded character sets: Coded Character Set One: integer 0 -> the character "A" integer 1 -> the character "B" Coded Character Set Two: integer 0 -> the character "B" integer 1 -> the character "A" Both of these coded character sets map to the characters "A" and "B", so they have the same character repertoire. But since the mapping is different (and obviously incompatible), these are different coded character sets.
  • characteristic curve — a graph of the density of a particular photographic material plotted against the logarithm of the exposure producing this density
  • characteristic x-ray — an x-ray that is emitted from an atom when an electron is displaced from an inner shell.
  • charismatic movement — any of various groups, within existing denominations, that emphasize communal prayer and the charismatic gifts of speaking in tongues, healing, etc
  • charleville-mézières — twin towns on opposite sides of the River Meuse in NE France. Pop: 55 490 (1999)
  • 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
  • checkbook journalism — the practice of paying for a news story or an interview, or for exclusive broadcasting or publishing rights.
  • checkerboard pattern — checked pattern that looks like a draughtboard
  • 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.
  • chemolithoautotrophs — Plural form of chemolithoautotroph.
  • chemotherapeutically — By means of chemotherapy.
  • chevalier-montrachet — a white wine from Burgundy.
  • 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
  • chinese scholar tree — a spreading, round-headed tree, Sophora japonica, of the legume family, native to China and Korea, having yellowish-white flowers in loose, showy clusters, grown widely as a street tree.
  • cholestyramine resin — a powdery synthetic resin that binds with and prevents the reabsorption of bile acids, used to reduce cholesterol levels, relieve itching associated with jaundice, etc.
  • christopher columbus — Christopher (Sp. Cristóbal Colón; It. Cristoforo Colombo) 1446?–1506, Italian navigator in Spanish service: traditionally considered the discoverer of America 1492.
  • christopher strachey — (person)   Professor of Computation at Oxford, England, born 1916, died May 1975. He invented the term "currying". See also: General Purpose Macro-generator.
  • chromatic aberration — a defect in a lens system in which different wavelengths of light are focused at different distances because they are refracted through different angles. It produces a blurred image with coloured fringes
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