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17-letter words containing a, i, l, u, r, o

  • purple of cassius — a purple pigment precipitated as a sol by the interaction of gold chloride and a solution of stannic acid and stannous chloride: used chiefly in the manufacture of ruby glass, ceramic glazes, and enamels.
  • pyroligneous acid — a yellowish, acidic, water-soluble liquid, containing about 10 percent acetic acid, obtained by the destructive distillation of wood: used for smoking meats.
  • pyrosulfuric acid — a strong, crystalline acid, H2S2O7, prepared commercially as a heavy, oily, fuming liquid: used in making explosives and dyes, as a sulfating agent, etc.
  • quadratic formula — the formula for determining theroots of a quadratic equation from its coefficients: .
  • quattuordecillion — a cardinal number represented in the U.S. by 1 followed by 45 zeros, and in Great Britain by 1 followed by 84 zeros.
  • radioluminescence — luminescence induced by nuclear radiation.
  • rational function — a function that can be written as the quotient of two polynomials with integral coefficients.
  • recreational drug — drug taken for pleasure
  • recursion formula — a formula for determining the next term of a sequence from one or more of the preceding terms.
  • 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
  • reflection nebula — a cloud of interstellar gas and dust that reflects the light of neighboring stars.
  • republic of china — People's Republic of, a country in E Asia. 3,691,502 sq. mi. (9,560,990 sq. km). Capital: Beijing.
  • republic of korea — a former country in E Asia, on a peninsula SE of Manchuria and between the Sea of Japan and the Yellow Sea: a kingdom prior to 1910; under Japanese rule 1910–45; now divided at 38° N into North Korea and South Korea. Compare Korean War.
  • republic of palau — a republic comprising a group of islands in the W Pacific, in the W Caroline Islands; administratively part of the UN Trust Territory of the Pacific Islands 1947–87; entered into an agreement of free association with the US (1980); became fully independent in 1994. Chief island: Babelthuap. Capital: Ngerulmud on Babelthuap (functions moved from Koror in 2006). Pop: 21 108 (2013 est). Area: 476 sq km (184 sq miles)
  • republic-of-china — People's Republic of, a country in E Asia. 3,691,502 sq. mi. (9,560,990 sq. km). Capital: Beijing.
  • res ipsa loquitur — the rule that an injury is due to the defendant's negligence when that which caused it was under his or her control or management and the injury would not have happened had proper management been observed.
  • reticulate python — a python, Python reticulatus, of southeastern Asia and the East Indies, sometimes growing to a length of 32 feet (10 meters): usually considered to be the largest snake in the world.
  • return of capital — A return of capital is a situation in which you receive back money that was previously invested.
  • return on capital — A return on capital is any earnings that you receive from the capital that you have invested.
  • revascularization — the restoration of the blood circulation of an organ or area, achieved by unblocking obstructed or disrupted blood vessels or by surgically implanting replacements.
  • revolutionary war — American Revolution.
  • rio grande do sul — a state in S Brazil. 107,923 sq. mi. (279,520 sq. km). Capital: Pôrto Alegre.
  • road-fund licence — a licence showing that the tax payable in respect of a motor vehicle has been paid
  • roll with a punch — to move in the same direction as a punch thrown at one so as to lessen its force
  • rotary cultivator — a machine for breaking up and tilling soil, consisting of a series of blades mounted on a revolving power-driven shaft
  • royal institution — a British society founded in 1799 for the dissemination of scientific knowledge
  • rubber plantation — an estate in a tropical country where rubber trees are grown on a large scale
  • russian wolfhound — borzoi.
  • scrophulariaceous — belonging to the Scrophulariaceae, the figwort family of plants.
  • secondary quality — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
  • self-purification — a natural process of purifying, as the ability of a body of water to rid itself of pollutants.
  • self-renunciation — renunciation of one's own will, interests, etc.
  • selkirk mountains — a mountain range in SW Canada, in SE British Columbia. Highest peak: Mount Sir Sandford, 3533 m (11 590 ft)
  • sexual dimorphism — the condition in which the males and females in a species are morphologically different, as with many birds.
  • sexual generation — the gametophyte generation in the alternation of generations in plants that produces a zygote from male and female gametes.
  • shirt-tail cousin — a distant cousin
  • situational irony — irony involving a situation in which actions have an effect that is opposite from what was intended, so that the outcome is contrary to what was expected.
  • socratic elenchus — the drawing out of the consequences of a position in order to show them to be contrary to some accepted position
  • sodium-vapor lamp — an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways.
  • south farmingdale — a town on central Long Island, in SE New York.
  • south lanarkshire — a council area of S Scotland, comprising the S part of the historical county of Lanarkshire: included within Strathclyde Region from 1975 to 1996: has uplands in the S and part of the Glasgow conurbation in the N: mainly agricultural. Administrative centre: Hamilton. Pop: 303 010 (2003 est). Area: 1771 sq km (684 sq miles)
  • southern triangle — the constellation Triangulum Australe.
  • spiritual bouquet — the spiritual presentation of a good work to another person.
  • spot-illustration — a rounded mark or stain made by foreign matter, as mud, blood, paint, ink, etc.; a blot or speck.
  • stannous chloride — a white, crystalline, water-soluble solid, SnCl 2 ⋅2H 2 O, used chiefly as a reducing and tinning agent, and as a mordant in dyeing with cochineal.
  • stannous fluoride — a white, crystalline powder, SnF 2 , slightly soluble in water: used as a source of fluorine in the prevention of dental caries, especially as a toothpaste additive.
  • statue of liberty — a large copper statue, on Liberty Island, in New York harbor, depicting a woman holding a burning torch: designed by F. A. Bartholdi and presented to the U.S. by France; unveiled 1886.
  • statutory holiday — a public holiday; a holiday all workers are entitled to
  • stellar evolution — the sequence of changes that occurs in a star as it ages
  • subclavian groove — either of two grooves in the first rib, one for the main artery (subclavian artery) and the other for the main vein (subclavian vein) of the arm
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