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15-letter words containing o, u, r, a, l

  • 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
  • disarticulation — The act of disarticulating.
  • double in brass — twice as large, heavy, strong, etc.; twofold in size, amount, number, extent, etc.: a double portion; a new house double the size of the old one.
  • 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 jeopardy — the subjecting of a person to a second trial or punishment for the same offense for which the person has already been tried or punished.
  • 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).
  • double-barreled — having two barrels mounted side by side, as a shotgun.
  • double-breasted — (of a coat, jacket, etc.) overlapping sufficiently in front to allow for two rows of buttons.
  • 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.
  • draft-mule work — drudgery
  • draw oneself up — to assume a straighter posture; stand or sit straight
  • edmund randolph — A(sa) Philip, 1889–1979, U.S. labor leader: president of the Brotherhood of Sleeping Car Porters 1925–68.
  • edriophthalmous — (of certain crustaceans) having stalkless eyes
  • 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
  • electrosurgical — Relating to electrosurgery.
  • eleutherodactyl — (of a bird) having the hind toe free
  • eleutheromaniac — Having a passionate mania for freedom.
  • eleutherophobia — the fear of freedom
  • epsilon squared — (jargon)   A quantity even smaller than epsilon, as small in comparison to epsilon as epsilon is to something normal; completely negligible. If you buy a supercomputer for a million dollars, the cost of the thousand-dollar terminal to go with it is epsilon, and the cost of the ten-dollar cable to connect them is epsilon squared. Compare lost in the underflow, lost in the noise.
  • eudiometrically — By means of or in terms of eudiometry.
  • faculty advisor — a member of the faculty who gives advice to students
  • fallout shelter — protective bunker
  • false buckthorn — a spiny shrub or small tree, Bumelia lanuginosa, of the sapodilla family, native to the southern U.S., having gummy, milky sap and white, bell-shaped flowers and yielding a hard, light-brown wood.
  • family grouping — a system, used usually in the infant school, of grouping children of various ages together, esp for project work
  • fault tolerance — (architecture)   1. The ability of a system or component to continue normal operation despite the presence of hardware or software faults. This often involves some degree of redundancy. 2. The number of faults a system or component can withstand before normal operation is impaired.
  • fauntleroy suit — a formal outfit for a boy composed of a hip-length jacket and knee-length pants, often in black velvet, and a wide, lacy collar and cuffs, usually worn with a broad sash at the waist and sometimes a large, loose bow at the neck, popular in the late 19th century.
  • fellow creature — a kindred creature, especially a fellow human being.
  • ferrous sulfate — a bluish-green, crystalline, saline-tasting, water-soluble heptahydrated solid, FeSO 4 ⋅7H 2 O, used chiefly in the manufacture of other iron salts, in water purification, fertilizer, inks, pigments, tanning, photography, and in medicine in the treatment of anemia.
  • flapping router — (networking)   A router that transmits routing updates alternately advertising a destination network first via one route, then via a different route. Flapping routers are identified on more advanced protocol analysers such as the Network General (TM) Sniffer.
  • flavourdynamics — as in quantum flavour dynamics, a mathematical model used to describe the interaction of flavoured particles (weak force) through the exchange of intermediate vector bosons
  • flavourlessness — Alternative spelling of flavorlessness.
  • flavoursomeness — Alt form flavorsomeness.
  • flirtatiousness — The quality of being flirtatious.
  • flood insurance — insurance covering loss or damage to property arising from a flood, flood tide, or the like.
  • floral tributes — bunches or arrangements of flowers left as a memorial at the site of a fatal incident
  • 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.
  • fluorochemicals — Plural form of fluorochemical.
  • fluorophosphate — a salt or ester of a fluorophosphoric acid.
  • foolscap quarto — a book size, 63⁄4 by 81⁄2 inches (foolscap quarto)
  • football ground — an area of land where football games are played
  • formal argument — (programming)   (Or "parameter") A name in a function or subroutine definition that is replaced by, or bound to, the corresponding actual argument when the function or subroutine is called. In many languages formal arguments behave like local variables which get initialised on entry. See: argument.
  • formal calculus — an uninterpreted symbolic system whose syntax is precisely defined, and on which a relation of deducibility is defined in purely syntactic terms; a logistic system
  • formal language — correct or polite words and phrases
  • formation fluid — Formation fluid is fluid in the pores (=tiny holes) of a rock.
  • formation rules — the set of rules that specify the syntax of a formal system; the algorithm that generates the well-formed formulae
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