17-letter words containing a, l, r, o, u, n
- 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-china — People's Republic of, a country in E Asia. 3,691,502 sq. mi. (9,560,990 sq. km). Capital: Beijing.
- 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
- rom kernel manual — (publication) (RKM) A series of books or files for developers for the Amiga computer, containing information about the operating system kernel stored in ROM.
- 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
- rural development — social or economic activities or initiatives designed to improve the standard of living in areas far away from large towns or cities
- russian wolfhound — borzoi.
- school playground — school's outdoor recreation area
- 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 generation — the gametophyte generation in the alternation of generations in plants that produces a zygote from male and female gametes.
- shetland pullover — a thick woollen sweater made from Shetland wool
- 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
- 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.
- 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.
- 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
- super-nationalism — an extreme or fanatical loyalty or devotion to a nation.
- superalimentation — nourishment; nutrition.
- supercolumniation — the placing of one order of columns above another.
- supra-nationalism — outside or beyond the authority of one national government, as a project or policy that is planned and controlled by a group of nations.
- surrender to bail — to present oneself at court at the appointed time after having been on bail
- technical support — an advising and troubleshooting service provided by a manufacturer, typically a software or hardware developer, to its customers, often online or on the telephone.
- temporomandibular — of, relating to, or situated near the hinge joint formed by the lower jaw and the temporal bone of the skull.
- tetrafluoroethene — a dense colourless gas that is polymerized to make polytetrafluorethene (PTFE). Formula: F2C:CF2
- the black country — the formerly heavily industrialized region of central England, northwest of Birmingham
- thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
- thermal pollution — a rise in the temperature of rivers or lakes that is injurious to water-dwelling life and is caused by the disposal of heated industrial waste water or water from the cooling towers of nuclear power plants.
- thermocoagulation — the coagulation of tissue by heat-producing high-frequency electric currents, used therapeutically to remove small growths or to create specific lesions in the brain.
- torricellian tube — a vertical glass tube partly evacuated and partly filled with mercury, the height of which is used as a measure of atmospheric pressure