21-letter words containing a, d, r, t
- a crying need for sth — If you say that there is a crying need for something, you mean that there is a very great need for it.
- a recipe for disaster — If you say that something is a recipe for disaster, you mean that it is very likely to have unpleasant consequences.
- a world heritage site — a site of international importance
- accommodation address — an address on letters, etc, to a person or business that does not wish or is not able to receive post at a permanent or actual address
- accommodation officer — a person employed by an institution or organization, whose job it is to find accommodation for the people who attend that institution, esp for students at a university or college
- accounting procedures — an established way of keeping company accounts
- accreditation officer — a person who is responsible for all aspects of the accreditation of an educational institution
- active matrix display — (hardware) A type of liquid crystal display where each display element (each pixel) includes an active component such as a transistor to maintain its state between scans. Contrast passive matrix display.
- active record pattern — (programming) Martin Fowler's name for object relational mapping viewed as a software architecture pattern.
- 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.
- ada core technologies — (company) (ACT) The company that maintains GNAT. Ada Core Technologies was founded in 1994 by the original authors of the GNAT compiler. ACT provides software for Ada 95 development.
- adams-stokes syndrome — Pathology. Stokes-Adams syndrome.
- adela rogers st johns — Adela Rogers, 1894–1988, U.S. journalist and writer.
- 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.
- administrative domain — (networking) (AD) A collection of hosts and routers, and the interconnecting network(s), managed by a single administrative authority.
- adult training centre — a day centre, run by a local authority, for people with learning difficulties to gain work experience
- adversative asyndeton — a staccato effect produced by omitting adversative connectives from between two or more items forming a group, as in “I liked all there was to buy in the store … I didn't get anything.”.
- adverse drug reaction — An adverse drug reaction is a harmful effect associated with the use of a medication at a normal dosage.
- aerodynamic stability — Aerodynamic stability is the way that a moving vehicle reacts to changes in air caused by passing vehicles.
- afro-american studies — black studies.
- air-to-ground missile — a missile fired from an aircraft that has a target on the ground
- airborne command post — any of several converted commercial aircraft equipped with special communications and code gear, intended as flying bunkers for the president, secretary of defense, military commanders, or their designated replacements.
- algorithm description — (language) (ALDES) ["The Algorithm Description Language ALDES", R.G.K. Loos, SIGSAM Bull 14(1):15-39 (Jan 1976)].
- all things considered — You say all things considered to indicate that you are making a judgment after taking all the facts into account.
- anders jonas ångström — Anders Jonas [an-derz joh-nuh s;; Swedish ahn-duh rs-yoo-nahs] /ˈæn dərz ˈdʒoʊ nəs;; Swedish ˈɑn dərsˈyu nɑs/ (Show IPA), 1814–74, Swedish astronomer and physicist.
- andrew message system — (messaging) A multimedia interface to electronic mail and bulletin boards, developed as part of the Andrew Project.
- anti-aircraft defence — military measures or resources aimed at destroying enemy aircraft
- antigenic determinant — the specific part of an antigen molecule to which an antibody becomes attached
- appendicular skeleton — the girdles and skeleton of the limbs
- application developer — (job) Someone who does application development.
- area drainage pattern — The area drainage pattern is the way in which streams and rivers allow water to flow from an area.
- argumentum ad hominem — fallacious argument that attacks not an opponent's beliefs but his motives or character
- 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 distance — the distance from one celestial body to another, measured in astronomical units, light-years, or parsecs.
- astronomical latitude — the angle between the direction of gravity at the observer's position and the plane of the celestial equator
- atomic disintegration — a process resulting in the change of a radioactive nucleus, either by emission of an alpha, beta, or gamma ray or by fission, and producing a change in the original mass, atomic number, or energy
- 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
- aversive conditioning — a type of behavior conditioning in which noxious stimuli are associated with undesirable or unwanted behavior that is to be modified or abolished, as the use of nausea-inducing drugs in the treatment of alcoholism.
- 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.
- banach-tarski paradox — (mathematics) It is possible to cut a solid ball into finitely many pieces (actually about half a dozen), and then put the pieces together again to get two solid balls, each the same size as the original. This paradox is a consequence of the Axiom of Choice.
- 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.
- be on the danger list — to be critically ill in hospital
- been there, done that — in or at that place (opposed to here): She is there now.
- before-and-after test — a test which compares the state or function of something before intervention or modification, and after it
- behavior modification — a technique that seeks to modify animal and human behavior through application of the principles of conditioning, in which rewards and reinforcements, or punishments, are used to establish desired habits, or patterns of behavior
- bernadette of lourdes — Saint. original name Marie Bernarde Soubirous. 1844–79, French peasant girl born in Lourdes, whose visions of the Virgin Mary led to the establishment of Lourdes as a centre of pilgrimage, esp for the sick or crippled. Feast day: Feb 18
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