18-letter words containing d, o, u, p, r, i
- angular dispersion — a measure of the angular separation of light rays of different wavelength or color traversing a prism or diffraction grating, equal to the rate of change of the angle of deviation with respect to the change in wavelength.
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- authorized capital — the total amount of value of the shares that a company is allowed to distribute
- avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
- berwick-upon-tweed — a town in N England, in N Northumberland at the mouth of the Tweed: much involved in border disputes between England and Scotland between the 12th and 16th centuries; neutral territory 1551–1885. Pop: 12 870 (2001)
- conjugated protein — a biochemical compound consisting of a sequence of amino acids making up a simple protein to which another nonprotein group (a prosthetic group), such as a carbohydrate or lipid group, is attached
- counter-adaptation — the act of adapting.
- counter-productive — Something that is counter-productive achieves the opposite result from the one that you want to achieve.
- cursor dipped in x — (jargon) The metaphorical source of the electronic equivalent of a poisoned-pen letter. Derived from English metaphors of the form "pen dipped in X" (where X = e.g. "acid", "bile", "vitriol"). These map over neatly to this hackish usage (the cursor being what moves, leaving letters behind, when one is composing on-line). "Talk about a nastygram! He must've had his cursor dipped in acid when he wrote that one!"
- decision procedure — a procedure, as an algorithm, for determining in a finite number of steps the validity of any of a certain class of propositions.
- developing country — a nonindustrialized poor country that is seeking to develop its resources by industrialization
- dominican republic — a republic in the West Indies, occupying the E part of the island of Hispaniola. 19,129 sq. mi. (49,545 sq. km). Capital: Santo Domingo.
- drainpipe trousers — trousers with very narrow legs
- drop in the bucket — a deep, cylindrical vessel, usually of metal, plastic, or wood, with a flat bottom and a semicircular bail, for collecting, carrying, or holding water, sand, fruit, etc.; pail.
- duty-free shopping — the making of duty-free purchases
- executive producer — a producer of a film or television programme who is involved with business or technical issues rather than the technical aspects of film or television production
- fulminating powder — powder that explodes by percussion.
- funding operations — the conversion of government floating stock or short-term debt into holdings of long-term bonds
- golden opportunity — perfect chance
- 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.
- indefinite pronoun — a pronoun, as English some, any, somebody, that leaves unspecified the identity of its referent.
- magnesium peroxide — a white, tasteless, water-insoluble powder, MgO 2 , used as an antiseptic and as an oxidizing and bleaching agent.
- marsilius of padua — c1280–1343? Italian scholar and political theorist.
- mordovian republic — a constituent republic of W central Russia, in the middle Volga basin. Capital: Saransk. Pop: 888 700 (2002). Area: 26 200 sq km (10 110 sq miles)
- mucopolysaccharide — (formerly) glycosaminoglycan.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- old curiosity shop — a novel (1840–41) by Dickens.
- optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- orthopedic surgery — corrective operation on bones or joints
- parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
- passing-out parade — a ceremonial parade of cadets who have completed their training
- percussion welding — a form of resistance welding in which the required pressure is provided by a hammerlike blow.
- piperonyl butoxide — a light-brown liquid, C 1 9 H 3 0 O 5 , used chiefly as a synergist in certain insecticides.
- pitch-and-run shot — chip shot.
- point of departure — Nautical. the precise location of a vessel, established in order to set a course, especially in beginning a voyage in open water.
- population pyramid — a graph showing the distribution of a population by sex, age, etc.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- potassium fluoride — a white, crystalline, hygroscopic, toxic powder, KF, used chiefly as an insecticide, a disinfectant, and in etching glass.
- predation pressure — the effect of predation upon a population, resulting in the decrease in size of that population.
- prefect of studies — a senior master in a Jesuit school or college
- process scheduling — multitasking
- product life cycle — the four stages (introduction, growth, maturity, and decline) into one of which the sales of a product fall during its market life
- production company — an organization which produces, films, plays, television or radio programmes
- production control — the planning and supervision of manufacturing activities to ensure that goods will be produced on time at the lowest possible cost.
- production manager — a supervisor of the budget, crew and other details in the production of a film or play
- productivity bonus — an extra payment made to workers for being more productive or yielding more favourable results than normal
- protective custody — detention of a person by the police solely as protection against a possible attack or reprisal by someone.
- protocol data unit — (PDU) A packet of data passed across a network. The term implies a specific layer of the OSI seven layer model and a specific protocol.
- provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
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