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15-letter words containing d, u, r, a, n, t

  • delayed neutron — a neutron produced in a nuclear reactor by the breakdown of a fission product and released a short time after neutrons produced in the primary process
  • delta reduction — (theory)   In lambda-calculus extended with constants, delta reduction replaces a function applied to the required number of arguments (a redex) by a result. E.g. plus 2 3 --> 5. In contrast with beta reduction (the only kind of reduction in the pure lambda-calculus) the result is not formed simply by textual substitution of arguments into the body of a function. Instead, a delta redex is matched against the left hand side of all delta rules and is replaced by the right hand side of the (first) matching rule. There is notionally one delta rule for each possible combination of function and arguments. Where this implies an infinite number of rules, the result is usually defined by reference to some external system such as mathematical addition or the hardware operations of some computer. For other types, all rules can be given explicitly, for example Boolean negation: not True = False not False = True (1997-02-20)
  • desulfurization — The process of removing sulfur from a substance, such as flue gas or crude.
  • deuteranomalous — having deuteranomaly; relating to deuteranomaly
  • dionysius thrax — c100 b.c, Greek grammarian.
  • disarticulating — Present participle of disarticulate.
  • disarticulation — The act of disarticulating.
  • discount market — a trading market in which notes, bills, and other negotiable instruments are discounted.
  • disquisitionary — of or relating to a disquisition
  • distance runner — a participant in distance races.
  • document reader — a device that reads and inputs into a computer marks and characters on a special form, as by optical or magnetic character recognition
  • domain maturity — (systems analysis)   The level of stability and depth of understanding that has been achieved in an area for which applications are developed.
  • domain squatter — (web)   An unscrupulous person who registers a domain name in the hope of selling it to the rightful, expected owner at a profit. E.g. http://foldoc.com/.
  • domitae naturae — (of animals) tamed or domesticated (distinguished from ferae naturae).
  • double integral — an integral in which the integrand involves a function of two variables and that requires two applications of the integration process to evaluate.
  • double standard — any code or set of principles containing different provisions for one group of people than for another, especially an unwritten code of sexual behavior permitting men more freedom than women. Compare single standard (def 1).
  • doublet pattern — a pattern, as on a fabric, in which a figure or group is duplicated in reverse order on the opposite side of a centerline.
  • dougherty wagon — a horse- or mule-drawn passenger wagon having doors on the side, transverse seats, and canvas sides that can be rolled down.
  • draughtproofing — Present participle of draughtproof.
  • draughtsmanship — (British) alternative spelling of draftsmanship.
  • drawing account — an account used by a partner or employee for cash withdrawals.
  • dynamic routing — (networking)   (Or "adaptive routing") Routing that adjusts automatically to network topology or traffic changes.
  • eastern sudanic — a group of languages belonging to the Nilo-Saharan family, spoken in eastern and central Africa and including the Nilotic languages.
  • echinodermatous — belonging or pertaining to the echinoderms.
  • elastic rebound — a theory of earthquakes that envisages gradual deformation of the fault zone without fault slippage until friction is overcome, when the fault suddenly slips to produce the earthquake
  • enumerated type — (programming)   (Or "enumeration") A type which includes in its definition an exhaustive list of possible values for variables of that type. Common examples include Boolean, which takes values from the list [true, false], and day-of-week which takes values [Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday]. Enumerated types are a feature of strongly typed languages, including C and Ada. Characters, (fixed-size) integers and even floating-point types could be (but are not usually) considered to be (large) enumerated types.
  • florida current — the part of the Gulf Stream which extends from the Florida Strait to Cape Hatteras.
  • fluoridationist — One who supports the addition of fluoride to the public water supply.
  • fluorine dating — a method of determining the relative age of fossil bones found in the same excavation by comparing their fluorine content.
  • football ground — an area of land where football games are played
  • formation fluid — Formation fluid is fluid in the pores (=tiny holes) of a rock.
  • founding father — The founding father of an institution, organization, or idea is the person who sets it up or who first develops it.
  • friend at court — a friend in a position of influence or power who may advance one's interests, especially a helpful person who is close to someone in authority.
  • gender equality — the state of having the same rights, status, and opportunities as others, regardless of one's gender.
  • general studies — a school subject that includes a variety of skills and topics (such as comprehension, and current affairs, which may complement the study of A-levels in specific subjects)
  • gotterdammerung — German Mythology. the destruction of the gods and of all things in a final battle with evil powers: erroneous modern translation of the Old Icelandic Ragnarǫk, meaning “fate of the gods,” misunderstood as Ragnarökkr, meaning “twilight of the gods.”.
  • grandiloquently — speaking or expressed in a lofty style, often to the point of being pompous or bombastic.
  • graph reduction — A technique invented by Chris Wadsworth where an expression is represented as a directed graph (usually drawn as an inverted tree). Each node represents a function call and its subtrees represent the arguments to that function. Subtrees are replaced by the expansion or value of the expression they represent. This is repeated until the tree has been reduced to a value with no more function calls (a normal form). In contrast to string reduction, graph reduction has the advantage that common subexpressions are represented as pointers to a single instance of the expression which is only reduced once. It is the most commonly used technique for implementing lazy evaluation.
  • great-grandaunt — an aunt of one's grandfather or grandmother.
  • griqualand east — a former district in S South Africa, SW of Natal.
  • griqualand west — a former district in S South Africa, N of the Orange River and W of the Orange Free State: diamonds found 1867.
  • guaranteed bond — a bond issued by a corporation in which payment of the principal, interest, or both is guaranteed by another corporation.
  • guns and butter — a symbol for the economic policy of a government insofar as spending is allocated for either military or social purposes
  • guru meditation — (operating system)   The Amiga equivalent of Unix's panic (sometimes just called a "guru" or "guru event"). When the system crashes, a cryptic message of the form "GURU MEDITATION #XXXXXXXX.YYYYYYYY" may appear, indicating what the problem was. An Amiga guru can figure things out from the numbers. In the earliest days of the Amiga, there was a device called a "Joyboard" which was basically a plastic board built onto a joystick-like device; it was sold with a skiing game cartridge for the Atari game machine. It is said that whenever the prototype OS crashed, the system programmer responsible would concentrate on a solution while sitting cross-legged, balanced on a Joyboard, resembling a meditating guru. Sadly, the joke was removed in AmigaOS 2.04. The Jargon File claimed that a guru event had to be followed by a Vulcan nerve pinch but, according to a correspondent, a mouse click was enough to start a reboot.
  • half-understood — partially understood
  • haute-normandie — a region of NW France, on the English Channel: generally fertile and flat
  • hunting leopard — the cheetah.
  • hydrofracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
  • immunoadsorbent — immunosorbent.
  • immunomodulator — a substance that affects the functioning of the immune system
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