24-letter words containing a, b, c, t, e, r
- adaptable user interface — (tool, product) (AUI, Oracle Toolkit) A toolkit from Oracle allowing applications to be written which will be portable between different windowing systems. AUI provides one call level interface along with a resource manager and editor across a range of "standard" GUIs, including Macintosh, Microsoft Windows and the X Window System.
- alternating bit protocol — (networking) (ABP) A simple data link layer protocol that retransmits lost or corrupted messages. Messages are sent from transmitter A to receiver B. Assume that the channel from A to B is initialised and that there are no messages in transit. Each message contains a data part, a checksum, and a one-bit sequence number, i.e. a value that is 0 or 1. When A sends a message, it sends it continuously, with the same sequence number, until it receives an acknowledgment (ACK) from B that contains the same sequence number. When that happens, A complements (flips) the sequence number and starts transmitting the next message. When B receives a message from A, it checks the checksum. If the message is not corrupted B sends back an ACK with the same sequence number. If it is the first message with that sequence number then it is sent for processing. Subsequent messages with the same sequence bit are simply acknowledged. If the message is corrupted B sends back an negative/error acknowledgment (NAK). This is optional, as A will continue transmitting until it receives the correct ACK. A treats corrupted ACK messages, and NAK messages in the same way. The simplest behaviour is to ignore them all and continue transmitting.
- antimicrobial resistance — the ability of an organism to resist the actions of the class of drugs that destroys or inhibits the growth of disease-causing microbes
- atanasoff-berry computer — (computer) (ABC) An early design for a binary calculator, one of the predecessors of the digital computer. The ABC was partially constructed between 1937 and 1942 by Dr. John Vincent Atanasoff and Clifford Berry at Iowa State College. As well as binary arithmetic, it incorporated regenerative memory, parallel processing, and separation of memory and computing functions. The electronic parts were mounted on a rotating drum, making it hybrid electronic/electromechanical. It was designed to handle only a single type of mathematical problem and was not automated. The results of a single calculation cycle had to be retrieved by a human operator, and fed back into the machine with all new instructions, to perform complex operations. It lacked any serious form of logical control or conditional statements. Atanasoff's patent application was denied because he never have a completed, working product. Ideas from the ABC were used in the design of ENIAC (1943-1946).
- bacillus calmette-guerin — a weakened strain of the tubercle bacillus, Mycobacterium bovis, used in the preparation of BCG vaccine.
- back electromotive force — counter electromotive force.
- backup domain controller — (networking) (BDC) A server in a network of Microsoft Windows computers that maintains a copy of the SAM database and handles access requests that the Primary Domain Controller (PDC) doesn't respond to. There may be zero or more BDCs in a network. They increase reliability and reduce load on the PDC.
- be called within the bar — to be appointed as a Queen's Counsel
- beta-adrenergic receptor — a site on a cell, as of the heart, that, upon interaction with epinephrine or norepinephrine, controls heartbeat and heart contractability, vasodilation, smooth muscle inhibition, and other physiological processes.
- bradley fighting vehicle — a 25-ton, tracked U.S. armored personnel carrier of the 1980s, designed to carry nine soldiers into battle and armed with a 25mm rapid-fire cannon, a machine gun, and an antitank missile launcher.
- bread-and-butter pickles — a sweet pickle relish made of sliced cucumbers, onions, and, often, bell peppers with mustard seed, turmeric, etc.
- browning automatic rifle — an air-cooled, fully automatic rifle capable of firing 200 to 350 rounds per minute. Abbreviation: BAR.
- by/through the back door — If you say that someone gets or does something by the back door or through the back door, you are criticizing them for doing it secretly and unofficially.
- campbell-stokes recorder — an instrument for recording hours of sunshine per day, consisting of a solid glass sphere that focuses rays of sunlight onto a light-sensitive card on which a line is burnt
- carcinoembryonic antigen — a glycoprotein found in serum, urine, etc. that is associated with various types of tumors: monitoring its levels is useful in treating cancer patients
- cast pearls before swine — to present something of great interest or value to someone incapable of appreciating it
- central african republic — a landlocked country of central Africa: joined with Chad as a territory of French Equatorial Africa in 1910; became an independent republic in 1960; a parliamentary monarchy (1976–79); consists of a huge plateau, mostly savanna, with dense forests in the south; drained chiefly by the Shari and Ubangi Rivers. Official language: French; Sango is the national language. Religion: Christian and animist. Currency: franc. Capital: Bangui. Pop: 5 166 510 (2013 est). Area: 622 577 sq km (240 376 sq miles)
- cerebrospinal meningitis — an acute infectious form of meningitis caused by the bacterium Neisseria meningitidis, characterized by high fever, skin rash, delirium, stupor, and sometimes coma
- cerebrovascular accident — a sudden interruption of the blood supply to the brain caused by rupture of an artery in the brain (cerebral haemorrhage) or the blocking of a blood vessel, as by a clot of blood (cerebral occlusion)
- chesapeake bay retriever — a strongly built variety of retriever with a short thick, slightly wavy coat in straw colour, reddish gold, or brown
- combat infantryman badge — a badge awarded to an infantryman in recognition of satisfactory performance of duty in ground combat against the enemy.
- crypt breakers workbench — (cbw) A freely distributable multi-window integrated workbench of tools for cryptanalysis of files encrypted with the 4.2BSD Unix crypt command. It was originally written by Robert W. Baldwin at MIT.
- descriptive bibliography — the aspect of bibliography concerned with the close physical study and description of books and other works.
- disturbance of the peace — a malicious and willful intrusion on the peace and quiet of a community or neighbourhood
- double overhead camshaft — a pair of overhead camshafts, one to operate the intake valves and the other to operate the exhaust valves. Abbreviation: DOHC.
- double-crested cormorant — a North American cormorant, Phalacrocorax auritus, having tufts of black and white feathers on the sides of the head.
- dream of the red chamber — Chinese Hung Lou Mêng or Hong Lou Meng. an 18th-century Chinese novel by Ts'ao Hsüeh-ch'in, completed by Kao E, in 120 chapters.
- electronic whiteboarding — audiographic teleconferencing
- intelligent backtracking — (algorithm) An improved backtracking algorithm for Prolog interpreters, which records the point at which each logic variable becomes bound and, when a given set of bindings leads to failure, ignores any choice point which does not bind any of those variables. No choice from such a choice point can succeed since it does not change the bindings which caused the failure.
- komi autonomous republic — an autonomous republic in the NW Russian Federation in Europe. 145,221 sq. mi. (376,122 sq. km). Capital: Syktyvkar.
- lab for computer science — MIT. http://lcs.mit.edu/.
- laryngotracheobronchitis — A respiratory disease, a form of croup.
- leave much to be desired — be inadequate
- mari autonomous republic — autonomous republic in the Russian Federation in Europe. 8994 sq. mi. (23,294 sq. km). Capital: Ioshkar-Ola.
- mathematical probability — the probability of an event consisting of n out of m possible equally likely occurrences, defined to be n/m
- neutrosophic probability — (logic) An extended form of probability based on Neutrosophy, in which a statement is held to be t true, i indeterminate, and f false, where t, i, f are real values from the ranges T, I, F, with no restriction on T, I, F or the sum n=t+i+f.
- object-oriented analysis — (programming) (OOA) The first phase of object-oriented design.
- object-oriented database — (database) (OODB) A system offering DBMS facilities in an object-oriented programming environment. Data is stored as objects and can be interpreted only using the methods specified by its class. The relationship between similar objects is preserved (inheritance) as are references between objects. Queries can be faster because joins are often not needed (as in a relational database). This is because an object can be retrieved directly without a search, by following its object id. The same programming language can be used for both data definition and data manipulation. The full power of the database programming language's type system can be used to model data structures and the relationship between the different data items. OODBs typically provide better support for versioning. An object can be viewed as the set of all its versions. Also, object versions can be treated as full fledged objects. OODBs also provide systematic support for triggers and constraints which are the basis of active databases. Most, if not all, object-oriented application programs that have database needs will benefit from using an OODB.
- object-oriented language — object-oriented programming
- passive balance of trade — a negative balance of trade
- permeability coefficient — the volume of an incompressible fluid that will flow in unit time through a unit cube of a porous substance across which a unit pressure difference is maintained
- polychlorinated biphenyl — PCB.
- portable document format — (file format) (PDF) The native file format for Adobe Systems' Acrobat. PDF is the file format for representing documents in a manner that is independent of the original application software, hardware, and operating system used to create those documents. A PDF file can describe documents containing any combination of text, graphics, and images in a device-independent and resolution independent format. These documents can be one page or thousands of pages, very simple or extremely complex with a rich use of fonts, graphics, colour, and images.
- portable scheme debugger — (PSD) A package for source code debugging of R4RS-compliant Scheme under GNU Emacs by Kellom ?ki Pertti <[email protected]>. Version 1.1. Distributed under GNU GPL. It works with scm, Elk and Scheme->C.
- potassium cobaltinitrite — a yellow, crystalline, slightly water-soluble powder, K 3 Co(NO 2) 6 , used as a pigment in oil and watercolor paints, and for coloring surfaces of glass, porcelain, etc.
- principal quantum number — the nonnegative, integral quantum number that defines the stationary orbits in the Bohr model of the atom.
- public international law — Also called public law. the law governing the legal relations between independent states or nations and, increasingly, between these and individuals.
- public relations officer — a person who is responsible for communications with the public
- quick-assembly furniture — furniture such as shelves and cupboards which you buy as a number of separate pieces and assemble yourself
- recharge one's batteries — If you recharge a battery, you put an electrical charge back into the battery by connecting it to a machine that draws power from another source of electricity.
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