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21-letter words containing c, h, i, r

  • cause-effect graphing — (programming)   A testing technique that aids in selecting, in a systematic way, a high-yield set of test cases that logically relates causes to effects to produce test cases. It has a beneficial side effect in pointing out incompleteness and ambiguities in specifications.
  • caviar to the general — a thing appealing only to a highly cultivated taste: Hamlet II, ii
  • central daylight time — the time observed in the Central Time Zone of the United states when Daylight Savings Time is in effect; GMT -5
  • central limit theorem — any of several theorems stating that the sum of a number of random variables obeying certain conditions will assume a normal distribution as the number of variables becomes large.
  • certificate authority — (cryptography, body)   (CA or "Trusted Third Party") An entity (typically a company) that issues digital certificates to other entities (organisations or individuals) to allow them to prove their identity to others. A Certificate Authority might be an external company such as VeriSign that offers digital certificate services or they might be an internal organisation such as a corporate MIS department. The Certificate Authority's chief function is to verify the identity of entities and issue digital certificates attesting to that identity. The process uses public key cryptography to create a "network of trust". If I want to prove my identity to you, I ask a CA (who you trust to have verified my identity) to encrypt a hash of my signed key with their private key. Then you can use the CA's public key to decrypt the hash and compare it with a hash you calculate yourself. Hashes are used to decrease the amount of data that needs to be transmitted. The hash function must be cryptographically strong, e.g. MD5.
  • character recognition — Character recognition is a process which allows computers to recognize written or printed characters such as numbers or letters and to change them into a form that the computer can use.
  • characteristic vector — a vector for which there exists a scalar such that the value of the vector under a given transformation is equal to the scalar times the vector.
  • charge-coupled device — an electronic device, used in imaging and signal processing, in which information is represented as packets of electric charge that are stored in an array of tiny closely spaced capacitors and can be moved from one capacitor to another in a controlled way
  • charity commissioners — (in Britain) members of a commission constituted to keep a register of charities and control charitable trusts
  • cheese and wine party — a party at which cheese and wine are served
  • chequebook journalism — Chequebook journalism is the practice of paying people large sums of money for information about crimes or famous people in order to get material for newspaper articles.
  • chickweed wintergreen — a primulaceous plant, Trientalis europaea, of N Europe and N Asia, having white flowers and leaves arranged in a whorl
  • chief master sergeant — a solider of the highest enlisted rank in the US Air Force
  • chief warrant officer — a senior-ranking warrant officer in various armed forces
  • child-directed speech — baby talk (def 2).
  • chinese forget-me-not — an eastern Asian plant, Cynoglossum amabile, of the borage family, having lance-shaped leaves and clustered, showy, blue, pink, or white flowers.
  • chinese lantern plant — winter cherry (def 1).
  • chinese water torture — a form of torture in which water is made to drip for a long period of time onto a victim's forehead to drive him insane
  • chinese-lantern plant — a perennial ground-cherry (Physalis alkekengi) grown for winter bouquets because of the bladderlike red calyx that surrounds its small, tomatolike fruit
  • chink in one's armour — a small but fatal weakness
  • chloroformyl chloride — phosgene.
  • christmas decorations — decorations of different kinds appropriate to Christmas, such as tinsel, candles, images of angels, etc.
  • christmas tree packet — (networking)   (Or kamikaze packet) A packet with every single option set for whatever protocol is in use. The term doubtless derives from a fanciful image of each little option bit being represented by a different-coloured light bulb, all turned on. 10 points for correctly being able to process a "Kamikaze" packet (AKA nastygram, Christmas tree packet, lamp test segment, et al.). That is, correctly handle a segment with the maximum combination of features at once (e.g. a SYN URG PUSH FIN segment with options and data). Compare: Chernobyl packet.
  • civil rights movement — campaign for human freedoms
  • class-relation method — (programming)   A design technique based on the concepts of object-oriented programming and the Entity-Relationship model from the French company Softeam.
  • clerk to the justices — (in England) a legally qualified person who sits in court with lay justices to advise them on points of law
  • come in from the cold — to come out of exile, isolation, etc.; resume an active role
  • comfortably-furnished — containing comfortable furniture
  • comparative philology — comparative linguistics.
  • completing the square — a method, usually of solving quadratic equations, by which a quadratic expression, as x 2 − 4 x + 3, is written as the sum or difference of a perfect square and a constant, x 2 − 4 x + 4 + 3 − 4 = (x − 2) 2 − 1, by addition and subtraction of appropriate constant terms.
  • computer architecture — the structure, behaviour, and design of computers
  • conditional discharge — If someone who is convicted of an offence is given a conditional discharge by a court, they are not punished unless they later commit a further offence.
  • congregational church — any evangelical Protestant Christian Church that is governed according to the principles of Congregationalism. In 1972 the majority of churches in the Congregational Church in England and Wales voted to become part of the United Reformed Church
  • constantine the great — (Flavius Valerius Aurelius Constantinus"the Great") a.d. 288?–337, Roman emperor 324–337: named Constantinople as the new capital; legally sanctioned Christian worship.
  • consummatory behavior — a behavior pattern that occurs in response to a stimulus and that achieves the satisfaction of a specific drive, as the eating of captured prey by a hungry predator (distinguished from appetitive behavior).
  • corporate hospitality — Corporate hospitality is the entertainment that a company offers to its most valued clients, for example by inviting them to sporting events and providing them with food and drink.
  • cosmological redshift — the part of the redshift of celestial objects resulting from the expansion of the universe.
  • crool someone's pitch — to spoil an opportunity for someone
  • crude oil dehydration — Crude oil dehydration is the removal of water or water vapor from crude oil, by separating the oil from the water, often in a rotating centrifuge.
  • crystallographic axis — one of the imaginary reference lines passing through the center of an ideal crystal, designated a, b, or c.
  • cut-through switching — (networking)   The application of wormhole routing to packets in a packet switching system so that forwarding of a packet starts as soon as its destination is known, before the whole packet has arrived. Compare store and forward.
  • dacryocystorhinostomy — A surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.
  • 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
  • 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
  • dendrochronologically — By the use of, or with reference to dendrochronology.
  • diapason normal pitch — a standard of pitch in which A above middle C is established at 435 vibrations per second.
  • disruptive technology — A disruptive technology is a new technology, such as computers and the Internet, which has a rapid and major effect on technologies that existed before.
  • drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
  • eiffel source checker — A compiler front-end for Eiffel 3 by Olaf Langmack <[email protected]> and Burghardt Groeber. It was generated automatically with the Karlsruhe toolbox for compiler construction according to the most recent public language definition. The parser derives an easy-to-use abstract syntax tree, supports elementary error recovery and provides a precise source code indication of errors. It performs a strict syntax check and analyses 4000 lines of source code per second on a Sun SPARC workstation.
  • electromyographically — By means of, or in terms of, electromyography.
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