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17-letter words containing n, a, f, u

  • rational function — a function that can be written as the quotient of two polynomials with integral coefficients.
  • recursion formula — a formula for determining the next term of a sequence from one or more of the preceding terms.
  • reduction formula — a formula, such as sin (90° ± A) = cos A, expressing the values of a trigonometric function of any angle greater than 90° in terms of a function of an acute angle
  • reflection nebula — a cloud of interstellar gas and dust that reflects the light of neighboring stars.
  • republic of china — People's Republic of, a country in E Asia. 3,691,502 sq. mi. (9,560,990 sq. km). Capital: Beijing.
  • republic-of-china — People's Republic of, a country in E Asia. 3,691,502 sq. mi. (9,560,990 sq. km). Capital: Beijing.
  • return of capital — A return of capital is a situation in which you receive back money that was previously invested.
  • road-fund licence — a licence showing that the tax payable in respect of a motor vehicle has been paid
  • russian wolfhound — borzoi.
  • safety in numbers — If you say that there is safety in numbers, you mean that you are safer doing something if there are a lot of people doing it rather than doing it alone.
  • safety precaution — a precaution that is taken in order to ensure that something is safe and not dangerous
  • san andreas fault — an active strike-slip fault in W United States, extending from San Francisco to S California and forming the on-land portion of the western margin of the North American Plate.
  • sawed-off shotgun — rifle with a short barrel
  • self-perpetuating — continuing oneself in office, rank, etc., beyond the normal limit.
  • self-purification — a natural process of purifying, as the ability of a body of water to rid itself of pollutants.
  • self-renunciation — renunciation of one's own will, interests, etc.
  • semi-manufactured — the making of goods or wares by manual labor or by machinery, especially on a large scale: the manufacture of television sets.
  • separating funnel — a large funnel having a tap in its output tube, used to separate immiscible liquids
  • sexual preference — Someone's sexual preference is the same as their sexual orientation.
  • silk manufacturer — a person or business that is involved in the manufacture of silk thread and fabric
  • sinus of valsalva — any of the pouches of the aorta and the pulmonary artery opposite the flaps of the semilunar valves into which blood returning to the heart flows, closing the valves.
  • sound effects man — a man who produces sounds artificially or reproduces them from a recording, etc, to create a theatrical effect, such as the bringing together of two halves of a hollow coconut shell to simulate a horse's gallop. Such sound effects are used in plays, films, etc
  • south farmingdale — a town on central Long Island, in SE New York.
  • spanish influenza — the pandemic respiratory infection that spread throughout the world during 1917–18.
  • spatial frequency — the measure of fine detail in an optical image in terms of cycles per millimetre
  • standard function — a subprogram provided by a translator that carries out a task, for example the computation of a mathematical function, such as sine, square root, etc
  • stannous fluoride — a white, crystalline powder, SnF 2 , slightly soluble in water: used as a source of fluorine in the prevention of dental caries, especially as a toothpaste additive.
  • statutory offense — a wrong punishable under a statute, rather than at common law.
  • stay of execution — If you are given a stay of execution, you are legally allowed to delay obeying an order of a court of law.
  • sufficient reason — the principle that nothing happens by pure chance, but that an explanation must always be available
  • surface condenser — a device condensing steam or vapor by passing it over a cool surface.
  • surface treatment — A surface treatment is a process applied to the surface of a material to make it better in some way, for example by making it more resistant to corrosion or wear.
  • sustentation fund — a fund, esp in the Church of Scotland, to augment the support of ministers
  • take upon oneself — to take the responsibility for; accept as a charge
  • tetrafluoroethene — a dense colourless gas that is polymerized to make polytetrafluorethene (PTFE). Formula: F2C:CF2
  • the carboniferous — the Carboniferous period or rock system
  • the final curtain — the closing of the curtain at the end of the action of a play
  • the life and soul — a person regarded as the main source of merriment and liveliness
  • the rann of kutch — an extensive salt waste in W central India, and S Pakistan: consists of the Great Rann in the north and the Little Rann in the southeast; seasonal alternation between marsh and desert; some saltworks. In 1968 an international tribunal awarded about 10 per cent of the border area to Pakistan. Area: 23 000 sq km (9000 sq miles)
  • thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
  • thuringian forest — a forested mountain region in central Germany: a resort area.
  • transfer function — The transfer function of a circuit is the ratio of the response to the input.
  • trapdoor function — a function defined from data by means of a mathematical procedure in such a way that it is easy to obtain the function when the data are known, but when the procedure and data are not known it becomes very difficult to determine the original data: used in cryptography, where the data are the characters of the plain text, or message, and the trapdoor function is the cryptogram.
  • unclassified road — a road that has not been given a grade because it is of a basic standard
  • uncomfortableness — causing discomfort or distress; painful; irritating.
  • unconformity trap — An unconformity trap is a hydrocarbon trap where the closure is made by an unconformity (= a formation of rock layers which represents a gap in the geological record).
  • uniformitarianism — supporting, conforming to, or derived from a theory or doctrine about uniformity, especially on the subject of geology.
  • unify corporation — (company)   Developers of the Unify relational database. At one time, before Sybase, they were a competitor of Oracle, et al.
  • unlawful assembly — a meeting of three or more people with the intent of carrying out any unlawful purpose
  • unlawful wounding — an offence committed when a person maliciously wounds another person
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