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17-letter words containing a, r, d, o

  • radioactive waste — the radioactive by-products from the operation of a nuclear reactor or from the reprocessing of depleted nuclear fuel.
  • radioluminescence — luminescence induced by nuclear radiation.
  • radiometeorograph — a device for the automatic transmission by radio of the data from a set of meteorological instruments
  • rail detector car — a car equipped with special instruments and used to locate defects in rails.
  • railroad crossing — place for vehicles to cross train tracks
  • rapid prototyping — (programming)   The creation of a working model of a software module to demonstrate the feasibility and suitability of the function. The prototype is expected to be replaced or refined before inclusion in the final product. Rapid prototyping contrasts with a DIRFT approach which emphasises careful design and implementation to avoid the overheads of debugging and testing prototype code. Rapid prototyping is appropriate when the requirements are unclear or likely to change (which is most of the time).
  • rat-tailed maggot — the aquatic larva of any of several syrphid flies of the genus Eristalis, that breathes through a long, thin tube at the posterior end of its body.
  • rattle one's dags — to hurry up
  • read the riot act — an English statute of 1715 providing that if 12 or more persons assemble unlawfully and riotously, to the disturbance of the public peace, and refuse to disperse upon proclamation they shall be considered guilty of felony.
  • read-write memory — a type of computer memory that you can write to as well as read from
  • reading knowledge — the ability to read a language, but not speak it
  • receding forehead — a forehead which slopes backwards
  • recreation ground — an open space for public recreation, esp one in a town, with swings and slides, etc, for children
  • recreational drug — drug taken for pleasure
  • reduction formula — a formula, such as sin (90° ± A) = cos A, expressing the values of a trigonometric function of any angle greater than 90° in terms of a function of an acute angle
  • refractory period — a short period after a nerve or muscle cell fires during which the cell cannot respond to additional stimulation.
  • restraining order — a judicial order to forbid a particular act until a decision is reached on an application for an injunction.
  • retarded ignition — late ignition, which may cause the engine to under-perform
  • revealed religion — religion based chiefly on the revelations of God to humans, especially as described in Scripture.
  • revealed theology — theology based on the doctrine that all religious truth is derived exclusively from the revelations of God to humans.
  • rheumatoid factor — an antibody that is found in the blood of many persons afflicted with rheumatoid arthritis and that reacts against globulins in the blood.
  • rhode island bent — a European pasture grass, Agrostis tenuis, naturalized in North America, having red flower clusters.
  • rhodope mountains — a mountain range in SE Europe, in the Balkan Peninsula extending along the border between Bulgaria and Greece. Highest peak: Golyam Perelik (Bulgaria), 2191 m (7188 ft)
  • rio grande do sul — a state in S Brazil. 107,923 sq. mi. (279,520 sq. km). Capital: Pôrto Alegre.
  • road construction — the building of roads
  • road-fund licence — a licence showing that the tax payable in respect of a motor vehicle has been paid
  • ross and cromarty — a historic county in NW Scotland.
  • rough-legged hawk — a large hawk, Buteo lagopus, of the Northern Hemisphere, that feeds chiefly on small rodents.
  • rural development — social or economic activities or initiatives designed to improve the standard of living in areas far away from large towns or cities
  • russell's paradox — a paradox of set theory in which an object is defined in terms of a class of objects that contains the object being defined, resulting in a logical contradiction.
  • russian wolfhound — borzoi.
  • sacred roman rota — rota1 (def 3).
  • sacrifice paddock — a grassed area allowed to be grazed completely, to be cultivated and resown later
  • sacrificial anode — Chemistry. an anode that is attached to a metal object subject to electrolysis and is decomposed instead of the object.
  • samurai tradition — the body of customs, thought, practices, etc belonging to the samurai warrior caste of Japan
  • san pedro channel — a strait between the mainland of SW California and Santa Catalina Island. About 20 miles (32 km) wide.
  • sandringham house — a residence of the royal family, in Sandringham, a village in E England, in Norfolk near the E shore of the Wash
  • sandro botticelli — Sandro [san-droh,, sahn-;; Italian sahn-draw] /ˈsæn droʊ,, ˈsɑn-;; Italian ˈsɑn drɔ/ (Show IPA), (Alessandro di Mariano dei Filipepi) 1444?–1510, Italian painter.
  • santa rosa island — an island off the coast of California, in the Santa Barbara (Channel Islands) of California. 17 miles (27 km) long.
  • saturation diving — a method of prolonged diving, using an underwater habitat to allow divers to remain in the high-pressure environment of the ocean depths long enough for their body tissues to become saturated with the inert components of the pressurized gas mixture that they breathe: when this condition is reached, the amount of time required for decompression remains the same, whether the dive lasts a day, a week, or a month.
  • scattered showers — showers that are scattered across an area, or that occur at intervals throughout the day
  • school playground — school's outdoor recreation area
  • second balkan war — Balkan War (def 2).
  • second derivative — the derivative of the derivative of a function: Acceleration is the second derivative of distance with respect to time.
  • second generation — being the second generation of a family to be born in a particular country: the oldest son of second-generation Americans.
  • second-generation — being the second generation of a family to be born in a particular country: the oldest son of second-generation Americans.
  • secondary battery — storage battery.
  • secondary boycott — a boycott by union members against their employer in order to induce the employer to bring pressure on another company involved in a labor dispute with the union.
  • secondary contact — communication or relationship between people characterized by impersonal and detached interest on the part of those involved.
  • secondary glazing — insulation by means of a second pane of glass, or a sheet of plastic: a simple form of double glazing
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