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18-letter words containing i, r, d, o, u

  • inductive relation — A relation R between domains D and E is inductive if for all chains d1 .. dn in D and e1 .. en in E,
  • industrial diamond — a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc
  • informatory double — a double intended to inform one's partner that one has a strong hand and to urge a bid regardless of the strength of his or her hand.
  • liquid distributor — A liquid distributor is a device which is used to spread liquid when it enters a packed column (= a tall vessel with packing, used for separating substances).
  • logarithmus dualis — (mathematics)   (ld) Latin for logarithm base two. More commonly written as "log" with a subscript "2". Roughly the number of bits required to represent an integer.
  • long hundredweight — a hundredweight of 112 pounds (50.8 kg), the usual hundredweight in Great Britain, but now rare in the U.S.
  • lord chief justice — the presiding judge of Britain's High Court of Justice, the superior court of record for both criminal and civil cases.
  • loschmidt's number — the number of molecules in one cubic centimeter of an ideal gas at standard temperature and pressure, equal to 2.687 × 10 19.
  • 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.
  • mercurous chloride — calomel.
  • misunderestimation — (nonstandard) An inaccurate underestimation, or an act of misunderestimating.
  • mixed-flow turbine — a water turbine in which water flows radially and axially through the rotating vanes
  • 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).
  • modulus of torsion — a coefficient of elasticity of a substance, expressing the ratio between the force per unit area (shearing stress) that laterally deforms the substance and the shear (shearing strain) that is produced by this force.
  • molecular medicine — the study of disease or injury at the molecular or cellular level.
  • 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.
  • multi-user dungeon — Multi-User Dimension
  • national guardsman — guardsman (def 2).
  • neuroendocrinology — the study of the anatomical and physiological interactions between the nervous and endocrine systems.
  • neuropsychodynamic — Of or pertaining to neuropsychodynamics.
  • nondestructiveness — The quality of not being destructive.
  • nonstriated muscle — smooth muscle
  • norwegian elkhound — one of a breed of dogs having a short, compact body, short, pointed ears, and a thick, gray coat, raised originally in Norway for hunting elk and other game.
  • old curiosity shop — a novel (1840–41) by Dickens.
  • on delicate ground — in a situation requiring tact
  • 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.
  • order of australia — an order awarded to Australians for outstanding achievement or for service to Australia or to humanity at large; established in 1975
  • order of magnitude — You can use order of magnitude when you are giving an approximate idea of the amount or importance of something.
  • orthopedic surgery — corrective operation on bones or joints
  • orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
  • 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.
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