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18-letter words containing s, d, a

  • quinacrine mustard — a nitrogen mustard derived from mepacrine and used as a stain for chromosomes
  • radiation exposure — exposure to radiant energy or to the particles emitted in the transfer of radiant energy, esp the particles and gamma rays emitted in nuclear decay; exposure to radioactive substances
  • radiation pressure — the pressure exerted on a surface by electromagnetic radiation or by sound waves.
  • radiation sickness — sickness caused by irradiation with x-rays or other nuclear radiation as a result of therapeutic treatment, accidental exposure, or a nuclear bomb explosion and characterized by nausea, vomiting, headache, cramps, diarrhea, loss of hair and teeth, destruction of white blood cells, and prolonged hemorrhage.
  • radical empiricism — (in the philosophy of William James) the doctrine that the only proper subject matter of philosophy is that which can be defined in terms of experience, and that relations are a part of experience.
  • radical expression — an expression in which radical signs appear.
  • radioactive series — a succession of elements initiated in the radioactive decay of a parent, as thorium or uranium, each of which decays into the next until a stable element, usually lead, is produced.
  • radius of gyration — the distance from an axis at which the mass of a body may be assumed to be concentrated and at which the moment of inertia will be equal to the moment of inertia of the actual mass about the axis, equal to the square root of the quotient of the moment of inertia and the mass.
  • rail rapid transit — a system of rail transit within an urban area that has exclusive right of way either below, above, or on the ground and so is capable of relatively high operating speed. Abbreviation: RRT.
  • rain cats and dogs — water that is condensed from the aqueous vapor in the atmosphere and falls to earth in drops more than 1/50 inch (0.5 mm) in diameter. Compare drizzle (def 6).
  • rear its ugly head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
  • reduction strategy — (theory)   An algorithm for deciding which redex(es) to reduce next. Different strategies have different termination properties in the presence of recursive functions or values. See string reduction, normal order reduction, applicative order reduction, parallel reduction
  • registered charity — official aid organization
  • registered company — a company which has officially registered its business
  • reinforced plastic — plastic with fibrous matter, such as carbon fibre, embedded in it to confer additional strength
  • remembrance sunday — the second Sunday in November, which is the Sunday closest to November 11, the anniversary of the armistice of 1918 that ended World War I, on which the dead of both World Wars are commemorated
  • repayment schedule — a document detailing the specific terms of a borrower's loan, such as monthly payment, interest rate, due dates etc
  • resaca de la palma — a locality in S Texas, near Brownsville: battle 1846.
  • rescind a contract — If an insurer rescinds an insurance contract, it terminates it because facts have been concealed or misrepresented by the proposer.
  • residential school — (in Canada) a boarding school maintained by the Canadian government for Indian and Inuit children from sparsely populated settlements
  • residual magnetism — remanence.
  • resistance plasmid — any of a group of bacterial plasmids carrying genetic information that provide resistance to antibiotic drugs: some resistance plasmids are able to transfer themselves, and hence resistance, during conjugation
  • resistance welding — welding utilizing pressure and heat that is generated in the pieces to be welded by resistance to an electric current.
  • restoration comedy — English comedy of the period of the Restoration, stressing manners and social satire.
  • restraint of trade — action tending to interrupt the free flow of goods and services, as by price fixing and other practices that have the effect of reducing competition.
  • retrograde amnesia — a memory disorder characterized by an inability to remember events or experiences that occurred before a significant point in time.
  • rheims-douay bible — Douay Bible.
  • rhode island white — one of a dual-purpose American breed of chickens having white feathers and a rose comb.
  • rhodes scholarship — one of a number of scholarships at Oxford University, established by the will of Cecil Rhodes, for selected students (Rhodes scholars) from the British Commonwealth and the United States.
  • ride a hobby horse — an activity or interest pursued for pleasure or relaxation and not as a main occupation: Her hobbies include stamp-collecting and woodcarving.
  • risk based testing — (testing)   Testing based on identification of potential risks (or "candidate risks"), which should be analysed by the project stakeholder or which might appear during the project's development.
  • row address strobe — (storage)   (RAS) An input to a dynamic random-access memory (DRAM) to indicate that the row address lines are valid.
  • russian federation — a republic extending from E Europe to N and W Asia. 6,593,000 sq. mi. (17,076,000 sq. km). Capital: Moscow.
  • safety-deposit box — a lockable metal box or drawer, especially in a bank vault, used for safely storing valuable papers, jewelry, etc.
  • saint bernard pass — either of two passes over the Alps: the Great St Bernard Pass 2472 m (8110 ft) high, east of Mont Blanc between Italy and Switzerland, or the Little St Bernard Pass 2157 m (7077 ft) high, south of Mont Blanc between Italy and France
  • saint george's day — April 23, celebrated in parts of the British Commonwealth in honor of the patron saint of Britain and especially in New Zealand as a bank holiday.
  • saint john's bread — carob (def 2).
  • saint vitus' dance — chorea (def 2).
  • sale and leaseback — leaseback.
  • sao caetano do sul — a city in SE Brazil, SE of São Paulo.
  • sao joao de meriti — a city in SE Brazil, NW of Rio de Janeiro.
  • saturated solution — A saturated solution is a solution in which there is so much solute that if there was any more, it would not dissolve.
  • say/kiss goodnight — If you say goodnight to someone or kiss them goodnight, you say something such as 'Goodnight' to them or kiss them before one of you goes home or goes to sleep.
  • schofield barracks — a town on central Oahu, in central Hawaii.
  • scholarship holder — a person who, because of academic merit, receives financial aid for their studies
  • school for scandal — a comedy of manners (1777) by Richard Brinsley Sheridan.
  • science dictionary — a specialized dictionary covering terms in the life, earth, and physical sciences, such as the online Science Dictionary on Dictionary.com. A science dictionary includes many technical terms with precise, specialized meanings—terms not normally found in general dictionaries—making it an invaluable resource for students and professionals in scientific fields.
  • scissors-and-paste — designating or of a piece of writing that has been assembled from a variety of sources rather than by original research, often in a hasty or uninspired way
  • scratch one's head — If you say that someone is scratching their head, you mean that they are thinking hard and trying to solve a problem or puzzle.
  • seafloor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
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