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18-letter words containing d, a, c, h

  • epicycloidal wheel — one of the planetary gears of an epicyclic train
  • established church — a Church that is officially recognized as a national institution, esp the Church of England
  • euclid's algorithm — (algorithm)   (Or "Euclidean Algorithm") An algorithm for finding the greatest common divisor (GCD) of two numbers. It relies on the identity gcd(a, b) = gcd(a-b, b) To find the GCD of two numbers by this algorithm, repeatedly replace the larger by subtracting the smaller from it until the two numbers are equal. E.g. 132, 168 -> 132, 36 -> 96, 36 -> 60, 36 -> 24, 36 -> 24, 12 -> 12, 12 so the GCD of 132 and 168 is 12. This algorithm requires only subtraction and comparison operations but can take a number of steps proportional to the difference between the initial numbers (e.g. gcd(1, 1001) will take 1000 steps).
  • ferdinand schiller — Ferdinand Canning Scott [kan-ing] /ˈkæn ɪŋ/ (Show IPA), 1864–1937, English philosopher in the U.S.
  • fish and chip shop — In Britain, a fish and chip shop is a shop which sells hot food such as fish and chips, fried chicken, sausages, and meat pies. The food is cooked in the shop and people take it away to eat at home or in the street.
  • fourth commandment — “Remember the sabbath day, to keep it holy”: fourth of the Ten Commandments.
  • gas-discharge tube — any tube in which an electric discharge takes place through a gas
  • go off half-cocked — (of a firearm) at the position of half cock.
  • goods and chattels — personal property
  • grandfather clause — U.S. History. a clause in the constitutions of some Southern states after 1890 intended to permit whites to vote while disfranchising blacks: it exempted from new literacy and property qualifications for voting those men entitled to vote before 1867 and their lineal descendants.
  • green-backed heron — a small, American heron, Butorides striatus, having glossy green wings.
  • handkerchief table — corner table.
  • handlebar mustache — A handlebar mustache is a long thick mustache with curled ends.
  • handyman's special — fixer-upper.
  • hebdomadal council — the governing council or senate of Oxford University
  • hegelian dialectic — an interpretive method, originally used to relate specific entities or events to the absolute idea, in which some assertible proposition (thesis) is necessarily opposed by an equally assertible and apparently contradictory proposition (antithesis) the mutual contradiction being reconciled on a higher level of truth by a third proposition (synthesis)
  • heptadecanoic acid — a colourless crystalline water-insoluble carboxylic acid used in organic synthesis. Formula: CH3(CH2)15COOH
  • heteroscedasticity — (statistics) The property of a series of random variables of 'not' every variable having the same finite variance.
  • heteroskedasticity — Alternative spelling of heteroscedasticity.
  • hidalgo y costilla — Miguel [mee-gel] /miˈgɛl/ (Show IPA), 1753–1811, Mexican priest, patriot, and revolutionist.
  • higher-order macro — A means of expressing certain higher-order functions in a first order language. Proposed by Phil Wadler. Higher-order macros cannot be recursive at the top level but they may contain recursive definitions. E.g. See partial evaluation.
  • histamine headache — cluster headache.
  • hot-water cylinder — a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system
  • hydrocinnamic acid — a white crystalline compound, C 9 H 10 O 2 , with a floral odor, used in perfumes and flavoring.
  • hydrofluorocarbons — Plural form of hydrofluorocarbon.
  • hydroxyacetic acid — glycolic acid.
  • hyposulfurous acid — an acid, H 2 S 2 O 4 , next in a series below sulfurous acid, known only in solution or in the form of its salts.
  • ice cream headache — Also called ice-cream headache. a pain in the temples and forehead brought on by quickly consuming very cold food or drink.
  • impedance matching — the technique of choosing or adjusting electric circuits and components so that the impedance of the load is equal to the internal impedance of the power source, thereby optimizing the power transfer from source to load.
  • in accordance with — conforming to
  • in black and white — without colour
  • incidental charges — Incidental charges are costs of items and services that are not part of the main bill.
  • indecent behaviour — the offence of committing indecent acts
  • industrial vehicle — a vehicle designed for use in industry
  • kitchen-sink drama — a type of drama of the 1950s depicting the sordid aspects of domestic reality
  • light displacement — the weight of a ship with all its permanent equipment, excluding the weight of cargo, persons, ballast, dunnage, and fuel, but usually including the weight of permanent ballast and water used to operate steam machinery.
  • lincoln's birthday — February 12, a legal holiday in some states of the U.S., in honor of the birth of Abraham Lincoln.
  • lipopolysaccharide — any of a class of polysaccharides to which lipids are attached.
  • manhattan district — (during World War II) the code name for a unit of US army engineers established in 1942 to construct secret sites for the development of the atomic bomb
  • mathematical model — a representation of a system, process, etc, in mathematical terms
  • matthias schleiden — Matthias Jakob [mah-tee-ahs yah-kawp] /mɑˈti ɑs ˈyɑ kɔp/ (Show IPA), 1804–81, German botanist.
  • mechanical drawing — drawing, as of machinery, done with the aid of rulers, scales, compasses, etc.
  • medical technician — a person, not a qualified doctor, who does practical work in a hospital
  • medium of exchange — anything generally accepted as representing a standard of value and exchangeable for goods or services.
  • middle paleolithic — See under Paleolithic.
  • modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
  • monte carlo method — a technique for numerically approximating the solution of a mathematical problem by studying the distribution of some random variable, often generated by a computer.
  • morphine addiction — the fact or condition of being addicted to morphine
  • mucopolysaccharide — (formerly) glycosaminoglycan.
  • multimedia machine — machines that allow users to control and manipulate sound, video, text and graphics
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