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20-letter words containing r, d, o, p

  • continued proportion — geometric progression
  • controlled explosion — the deliberate detonation of an explosive device under strictly controlled circumstances
  • coordination complex — one of a number of complex compounds in which an atom or group of atoms is bound to the central atom by a shared pair of electrons supplied by the coordinated group and not by the central atom
  • corresponding angles — a pair of nonadjacent angles, one interior and one exterior, on the same side of a transversal: these paired angles are equal if the lines cut by the transversal are parallel
  • criminal proceedings — action taken in a court to bring a criminal prosecution against someone
  • cycloidal propulsion — propulsion of a vessel by propellers of controllable pitch that steer as well as propel.
  • darkfield microscope — kind of microscope
  • decahydronaphthalene — a colorless, aromatic liquid, C 10 H 18 , insoluble in water and soluble in alcohol and ether: used as a solvent for oils, fats, etc., in cleaning fluids, lubricants, etc.
  • decompartmentalizing — Present participle of decompartmentalize.
  • decomposed petri net — (parallel)   (DPN) A Petri net that has been split into multiple, interconnected nets. This makes it easier to analyse or run the net. DPNs are the basis of concurrency in ConC.
  • deep vein thrombosis — Deep vein thrombosis is a serious medical condition caused by blood clots in the legs moving up to the lungs. The abbreviation DVT is also used.
  • deep-vein thrombosis — a condition in which a blood clot forms in a vein deep beneath the skin, typically in the leg or pelvic area: Immobility and lack of exercise are risk factors for deep-vein thrombosis.
  • definite description — a description that is modified by the definite article or a possessive, such as the woman in white or Rosemary's baby
  • demographic timebomb — a predicted shortage of school-leavers and consequently of available workers, caused by an earlier drop in the birth rate, resulting in an older workforce
  • denali national park — a national park in S central Alaska, including Denali (mountain). 3030 sq. mi. (7850 sq. km).
  • department of energy — the department of the U.S. federal government that sets forth and maintains the national energy policy, including energy conservation, environmental protection, etc. Abbreviation: DOE.
  • department of health — government ministry for health matters
  • depreciation expense — A depreciation expense is the amount deducted from gross profit to allow for a reduction in the value of something because of its age or how much it has been used.
  • descriptive geometry — the study of the projection of three-dimensional figures onto a plane surface
  • descriptive notation — a method of denoting the squares on the chessboard in which each player names the files from the pieces that stand on them at the opening and numbers the ranks away from himself
  • desmopressin acetate — a vasopressin analogue, C 46 H 64 N 14 O 12 S 2 , used in the treatment of diabetes insipidus.
  • developing-out paper — a sensitized printing paper requiring development in order to bring out the image. Abbreviation: D.O.P.
  • diabetic retinopathy — a disorder of the blood vessels of the retina occurring as a complication of poorly controlled diabetes mellitus and often leading to blindness.
  • diamondback terrapin — any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
  • diplomatic secretary — secretary (def 5).
  • diplomatic-secretary — secretary (def 5).
  • dispersion hardening — the strengthening of an alloy as a result of the presence of fine particles in the lattice
  • disproportionateness — The state or quality of being disproportionate or out of proportion.
  • doctor of philosophy — Also called doctorate. the highest degree awarded by a graduate school, usually to a person who has completed at least three years of graduate study and a dissertation approved by a board of professors.
  • dolly varden pattern — a fabric print consisting of bouquets of flowers.
  • double-aspect theory — a monistic theory that holds that mind and body are not distinct substances but merely different aspects of a single substance
  • drum and bugle corps — a marching band of drum players and buglers.
  • due process (of law) — the course of legal proceedings established by the legal system of a nation or state to protect individual rights
  • education department — the department of a local authority that is concerned with education, or the government department concerned with education
  • electrocardiographic — Of or pertaining to an electrocardiogram (ECG) or electrocardiograph.
  • equity of redemption — the right that a mortgager has in equity to redeem his property on payment of the sum owing, even though the sum is overdue
  • european social fund — one of the four Structural Funds of the European Union which aims to support employment and the economic and social well-being of EU member countries
  • factor of production — any instrument, agent, etc., employed in the production of goods and services.
  • field ion microscope — a device in which the atomic structure of the surface of a conductor is made visible by introducing helium gas into the device and applying a high voltage to ionize and accelerate the gas toward a fluorescent screen.
  • field-ion microscope — a device in which the atomic structure of the surface of a conductor is made visible by introducing helium gas into the device and applying a high voltage to ionize and accelerate the gas toward a fluorescent screen.
  • file descriptor leak — (programming)   (Or "fd leak" /F D leek/) A kind of programming bug analogous to a core leak, in which a program fails to close file descriptors ("fd"s) after file operations are completed, and thus eventually runs out of them. See leak.
  • first world problems — If you say that someone has First World problems, you mean that their problems are not really very important.
  • fixed action pattern — a highly stereotyped pattern of behavior that is characteristic of a particular species.
  • fixed-price contract — a contract in which the price is preset and invariable, regardless of the actual costs of production.
  • floodlight projector — a powerful lamp having a reflector curved to produce a floodlight.
  • fore-and-aft topsail — gaff topsail (def 1).
  • freedom of the press — the right to publish newspapers, magazines, and other printed matter without governmental restriction and subject only to the laws of libel, obscenity, sedition, etc.
  • good neighbor policy — a diplomatic policy of the U.S., first presented in 1933 by President Franklin Roosevelt, for the encouragement of friendly relations and mutual defense among the nations of the Western Hemisphere.
  • group code recording — (storage)   (GCR) A recording method used for 6250 BPI magnetic tapes. GCR typically uses a group of five bits of code to represent four bits of data. The encoding ensures no more than two or three zeros occur in a row, and no more than eight or so ones occur in a row, where zeros represent an absense of magnetic change. GCR is also used on Commodore Business Machines diskette drives; the 4040, 8050, 154x, 157x and 158x series of 5.25" and 3.5" low and high density diskette drives used with 8-bit home computers circa 1977 to 1992. It was also supported on Amiga internal and external drives but only used for reading non-Amiga disks. Compare NRZI, PE.
  • happy hunting ground — the North American Indian heaven, conceived of as a paradise of hunting and feasting for warriors and hunters.
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