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25-letter words containing s, e, n, r

  • character encoding scheme — character encoding
  • characteristic polynomial — an expression obtained from a given matrix by taking the determinant of the difference between the matrix and an arbitrary variable times the identity matrix.
  • cheshire west and chester — a unitary authority in NW England. Administrative centre: Chester. Pop: 328 100 (2008 est). Area: 917 sq km (354 sq miles)
  • cheyne-stokes respiration — respiration characterized by cycles of deep, rapid breathing and weak, slow breathing, as in cases of heart failure or coma
  • chief of naval operations — the highest officer in the U.S. Navy and a member of the Joint Chiefs of Staff.
  • child protection register — (in Britain) a confidential list of children who are at continuing risk of physical, emotional, or sexual abuse or neglect
  • child-resistant container — A child-resistant container is a container designed to be difficult for a child to open.
  • circle of least confusion — the smallest cross section in a beam of paraxial rays, lying in the plane of least spherical aberration.
  • closed-circuit television — a television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit, as used in security systems, etc
  • command control processor — (operating system)   (CCP) CP/M's command-line interpreter.
  • commissioner of education — (in the US) the head of a state's education department
  • commonwealth of australia — Australia's official title
  • community support officer — a uniformed officer who is not a member of the police force but who has certain powers to be exercised in supplementing the role of the police, esp crowd control, tackling anti-social behaviour, etc
  • compensated semiconductor — a semiconductor in which donors and acceptors are related in such a way that their opposing electrical effects are partially cancelled
  • complete inference system — (logic)   An inference system A is complete with respect to another system B if A can reach every conclusion which is true in B. The dual to completeness is soundness.
  • computer-aided publishing — desktop publishing. Abbreviation: CAP.
  • constant angular velocity — (storage)   (CAV) One of the two schemes for controlling the rate of rotation of the disk in a disk drive. Constant angular velocity keeps the rate of rotation constant. This means that the linear velocity of the disk under the head is larger when reading or writing the outer tracks. This in turn implies either a variation in the data rate to and from the heads or the bits per unit length along the track. The alternative, constant linear velocity, requires the rate of rotation of the disk to accelerate and decelerate according to the radial postion of the heads, increasing the energy use and vibration.
  • constant applicative form — (functional programming)   (CAF) A supercombinator which is not a lambda abstraction. This includes truly constant expressions such as 12, (+ 1 2), [1, 2, 3] as well as partially applied functions such as (+ 4). Note that this last example is equivalent under eta abstraction to \ x . + 4 x which is not a CAF. Since a CAF is a supercombinator, it contains no free variables. Moreover, since it is not a lambda abstraction it contains no variables at all. It may however contain identifiers which refer to other CAFs, e.g. c 3 where c = (* 2). A CAF can always be lifted to the top level of the program. It can either be compiled to a piece of graph which will be shared by all uses or to some shared code which will overwrite itself with some graph the first time it is evaluated. A CAF such as ints = from 1 where from n = n : from (n+1) can grow without bound but may only be accessible from within the code of one or more functions. In order for the garbage collector to be able to reclaim such structures, we associate with each function a list of the CAFs to which it refers. When garbage collecting a reference to the function we collect the CAFs on its list.
  • constructive interference — the interference of two or more waves of equal frequency and phase, resulting in their mutual reinforcement and producing a single amplitude equal to the sum of the amplitudes of the individual waves.
  • court of general sessions — a local court with general jurisdiction, both civil and criminal.
  • crown prosecution service — (in England and Wales) an independent prosecuting body, established in 1986, that decides whether cases brought by the police should go to the courts: headed by the Director of Public Prosecutions
  • crude oil degassing plant — A crude oil degassing plant is equipment that removes light ends such as methane and butane from crude oil.
  • crude oil pyrolysis plant — A crude oil pyrolysis plant is equipment used for converting waste and poor fuel to a better product by pyrolysis (= the use of heat to decompose organic material).
  • crude oil splitting tower — A crude oil splitting tower is a vessel into which crude oil enters, at the bottom, and where the different components are obtained by a splitting process, rather than rearranging the molecules.
  • cry on someone's shoulder — to tell one's troubles to someone in seeking comfort or sympathy
  • culture specific syndrome — a behavioral disturbance in a specific cultural setting that is identified and named by the cultural group itself.
  • cut a person down to size — to reduce in importance or decrease the conceit of
  • data processing equipment — Data processing equipment is electrically operated equipment that accumulates, processes, and stores data.
  • dataphone digital service — (communications, product)   (DDS) The first private-line digital service offered by AT&T, with data rates typically at 2.4, 4.8, 9.6 and 56 kilobits per second. DDS is now part of AT&T's Accunet family of services. Most LEC (local exchange carriers) and IXC (IntereXchange Carriers) offer similar services.
  • de mortuis nil nisi bonum — (say) nothing but good of the dead
  • decision support database — A database from which data is extracted and analysed statistically (but not modified) in order to inform business or other decisions. This is in contrast to an operational database which is being continuously updated. For example, a decision support database might provide data to determine the average salary of different types of workers, whereas an operational database containing the same data would be used to calculate pay check amounts. Often, decision support data is extracted from operation databases.
  • decreasing term insurance — Decreasing term insurance is life insurance with the amount of coverage decreasing over the term of the policy and a lump sum payment if you die in advance.
  • defense trade regulations — (legal)   The U.S. law governening munitions export and defense technology (F-16s, TOW missiles and cryptology). According to the U.S. (and Canada) cryptography is a munition and people who export it can be charged as though they were exporting bombs or state secrets. People have been. See also EFF.
  • democratic unionist party — a Northern Irish political party, founded by Ian Paisley in 1971, advocating the maintenance of union with the UK
  • detective chief inspector — a police officer who investigates crime and who ranks above a detective inspector but below a detective superintendent
  • díaz del castillo, bernal — (bɛʀˈnɑl) ; bernälˈ) 1492?-1581?; Sp. historian & soldier with Cortés
  • diesel-electric generator — A diesel-electric generator is a piece of equipment that uses diesel as a fuel to produce electricity.
  • digital rights management — (legal)   (DRM) Any technology used to limit the use of software, music, movies or other digital data. This generally relies on some interaction between the media and the system that plays it. For example, video DVDs usually include a region code. If this does not match the player's region code, the player will refuse to play the disc.
  • digital signal processing — (DSP) Computer manipulation of analog signals (commonly sound or image) which have been converted to digital form (sampled).
  • diminished responsibility — law: lack of capacity
  • discrete cosine transform — (mathematics)   (DCT) A technique for expressing a waveform as a weighted sum of cosines. The DCT is central to many kinds of signal processing, especially video compression. Given data A(i), where i is an integer in the range 0 to N-1, the forward DCT (which would be used e.g. by an encoder) is: B(k) = sum A(i) cos((pi k/N) (2 i + 1)/2) i=0 to N-1 B(k) is defined for all values of the frequency-space variable k, but we only care about integer k in the range 0 to N-1. The inverse DCT (which would be used e.g. by a decoder) is: AA(i)= sum B(k) (2-delta(k-0)) cos((pi k/N)(2 i + 1)/2) k=0 to N-1 where delta(k) is the Kronecker delta. The main difference between this and a discrete Fourier transform (DFT) is that the DFT traditionally assumes that the data A(i) is periodically continued with a period of N, whereas the DCT assumes that the data is continued with its mirror image, then periodically continued with a period of 2N. Mathematically, this transform pair is exact, i.e. AA(i) == A(i), resulting in lossless coding; only when some of the coefficients are approximated does compression occur. There exist fast DCT algorithms in analogy to the Fast Fourier Transform.
  • do-it-yourself enthusiast — an enthusiast of the hobby or process of constructing and repairing things by yourself
  • document image processing — (DIP) Storage, management and retrieval of images.
  • dopamine receptor agonist — A dopamine receptor agonist is any compound that activates dopamine receptors when dopamine is not present.
  • drive someone up the wall — If you say that something or someone is driving you up the wall, you are emphasizing that they annoy and irritate you.
  • eastern aden protectorate — a former British protectorate, now the E part of the People's Democratic Republic of Yemen: composed of the Arab sheikdoms of Hadhramaut and the island of Socotra.
  • edward trowbridge collins — Edward Trowbridge ("Eddie") 1887–1951, U.S. baseball player.
  • electroconvulsive therapy — the treatment of certain psychotic conditions by passing an electric current through the brain to induce coma or convulsions
  • electronic funds transfer — (application, communications)   (EFT, EFTS, - system) Transfer of money initiated through electronic terminal, automated teller machine, computer, telephone, or magnetic tape. In the late 1990s, this increasingly includes transfer initiated via the web. The term also applies to credit card and automated bill payments.
  • electronic news gathering — the collecting of a television news story using electronic equipment, such as a portable video camera, rather than a traditional film camera
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