21-letter words containing a, c, t, u, r
- a rap on the knuckles — If someone in authority gives you a rap on the knuckles, they criticize you or blame you for doing something they think is wrong.
- absolutely convergent — of or characterized by absolute convergence.
- accounting procedures — an established way of keeping company accounts
- acute stress disorder — an anxiety disorder marked by dissociative symptoms and occurring within one month of exposure to a traumatic event, which, if persistent, can become posttraumatic stress disorder.
- adjusted gross income — (in U.S. income-tax returns) the total of an individual's wages, salaries, interest, dividends, etc., minus allowable deductions. Abbreviation: AGI.
- administrative county — a principal administrative division in Great Britain, usually not coextensive with traditional county boundaries.
- adult training centre — a day centre, run by a local authority, for people with learning difficulties to gain work experience
- adverse drug reaction — An adverse drug reaction is a harmful effect associated with the use of a medication at a normal dosage.
- afro-american studies — black studies.
- agricultural engineer — an engineer who specialises in the design, development, and installation of agricultural and forestry machinery and advises on rural development and the management of natural resources
- alpha centauri system — a star system comprising the binary star Alpha Centauri A and B and Proxima Centauri (also called Alpha Centauri C), which is 0.1 light years closer to the sun. Visual magnitude: 0.01 (A), 1.33 (B); spectral type: G2V (A); distance from earth: 4.3 light years
- alpha piscis austrini — Fomalhaut
- angular magnification — the ratio of the angle subtended at the eye by an image formed by an optical instrument to the angle subtended at the unaided eye by the object
- annual change traffic — (software) (ACT) The fraction of the software product's source code which changes during a year, either through addition or modification. The ACT can be used to determine the product size in order to estimate software maintenance effort.
- apothecaries' measure — a system of liquid volume measure used in pharmacy in which 60 minims equal 1 fluid drachm, 8 fluid drachms equal 1 fluid ounce, and 20 fluid ounces equal 1 pint
- appendicular skeleton — the girdles and skeleton of the limbs
- appropriation account — an account showing how funds have been used
- architecture parlante — the architecture of buildings that, in their plans or elevations, create an image that suggests their functions.
- arithmetic logic unit — the part of a central processing unit that performs arithmetic and logical operations
- arithmetic/logic unit — ALU.
- as a matter of course — If you do something as a matter of course, you do it as part of your normal work or way of life.
- as dull as ditchwater — extremely uninspiring
- assisted reproduction — the use of medical techniques to bring about the conception and birth of a child, including artificial insemination, in vitro fertilization, egg and embryo donation, and drug therapy.
- astronomical latitude — the angle between the direction of gravity at the observer's position and the plane of the celestial equator
- atrioventricular node — a small mass of muscular fibers at the base of the wall between the atria, conducting impulses received from the sinoatrial node by way of the atrioventricular bundles and, under certain conditions, functioning for the sinoatrial node as pacemaker of the heart. Abbreviation: A-V node.
- australian cattle dog — a compact strongly-built dog of a breed with pricked ears and a smooth bluish-grey coat, often used for controlling and moving cattle
- background projection — the projection from the rear of previously photographed material on a translucent screen, used as background for a television or motion-picture shot.
- bad conduct discharge — a discharge of a person from military service for an offense less serious than one for which a dishonorable discharge is given.
- basis of articulation — a configuration of the speech tract that represents the most neutral articulatory configuration for a given language.
- baudouin de courtenay — Jan Ignacy Niecisław [yahn ig-nah-tsi nye-tsis-lahf] /yɑn ɪgˈnɑ tsɪ ˈnyɛ tsɪsˌlɑf/ (Show IPA), 1845–1929, Polish linguist: pioneer in modern phonology.
- behavioural contagion — the spread of a particular type of behaviour, such as crying, through a crowd or group of people
- bibliographic utility — an organization that maintains computerized bibliographic records and offers to its members or customers various products and services related to these records.
- bicameral legislature — two-chamber lawmaking system
- binomial nomenclature — a system for naming plants and animals by means of two Latin names: the first indicating the genus and the second the species to which the organism belongs, as in Panthera leo (the lion)
- blackburn with darwen — a unitary authority in NW England, in Lancashire. Pop: 139 800 (2003 est). Area: 137 sq km (53 sq miles)
- bottlebrush moustache — a short, bristly moustache
- buffalo carpet beetle — any of several small beetles of the family Dermestidae, the larvae of which are household pests, feeding on rugs and other woolen fabrics, especially Anthrenus scrophulariae (buffalo carpet beetle) and Attagenus piceus (black carpet beetle)
- burroughs corporation — (company) A company which merged with Sperry Univac to form Unisys Corporation. They produced the Datatron 200 series among other computers.
- cantilever foundation — a building foundation supporting its load partly or wholly upon cantilevers.
- 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.
- central european time — the standard time adopted by Western European countries one hour ahead of Greenwich Mean Time, corresponding to British Summer Time
- 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.
- charles edward stuart — a member of the royal family that ruled in Scotland from 1371 to 1714 and in England from 1603 to 1714.
- charterhouse of parma — a novel (1839) by Stendhal.
- cheque guarantee card — a card issued by a bank or building society, guaranteeing payment of a customer's cheques up to a stated value
- 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
- circular polarization — electromagnetic radiation (esp light) in which the electric field vector describes a circle about the direction of propagation at any point in the path of the radiation
- clayton antitrust act — an act of Congress in 1914 supplementing the Sherman Antitrust Act and establishing the FTC.
- clayton-bulwer treaty — an agreement between the U.S. and Great Britain in 1850 guaranteeing that any canal built to connect the Atlantic and Pacific across Central America would be jointly controlled, open to all nations, and unfortified.
- column address strobe — (hardware) (CAS) A signal sent from a processor (or memory controller) to a dynamic random-access memory (DRAM) (qv) circuit to indicate that the column address lines are valid.
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