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18-letter words containing s, p, i

  • automatic exposure — the automatic adjustment of the lens aperture and shutter speed of a camera by a control mechanism
  • avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
  • ballistic pendulum — a device consisting of a large mass hung from a horizontal bar by two rods, used to measure the velocity of an object, as a bullet, by retaining the object upon impact, its velocity being a function of the displacement of the mass.
  • baritone saxophone — the second lowest instrument in the family of saxophones
  • behaviour patterns — the characteristic ways in which a person or animal acts
  • benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
  • bichromate process — any of several methods of photography in which the light-sensitive medium is alkaline bichromate associated with a colloid such as gum, albumen, or gelatin.
  • biological parents — the biological mother and father of a child
  • bipolar transistor — (electronics)   A transistor made from a sandwich of n- and p-type semiconductor material: either npn or pnp. The middle section is known as the "base" and the other two as the "collector" and "emitter". When used as an amplifying element, the base to emitter junction is in a "forward-biased" (conducting) condition, and the base to collector junction is "reverse-biased" or non-conducting. Small changes in the base to emitter current (the input signal) cause either holes (for pnp devices) or free electrons (for npn) to enter the base from the emitter. The attracting voltage of the collector causes the majority of these charges to cross into and be collected by the collector, resulting in amplification. Contrast field effect transistor.
  • bitwise complement — The bitwise complement of a bit field is a bit field of the same length but with each zero changed to a one and vice versa. This is the same as the ones complement of a binary integer.
  • blue-plate special — an inexpensive restaurant meal served at a fixed price on a large plate, originally blue
  • bomb disposal unit — a unit of the police or armed services specializing in bomb disposal
  • bottlenose dolphin — any dolphin of the genus Tursiops, esp T. truncatus, some of which have been kept in captivity and trained to perform tricks
  • brazilian sapphire — a blue variety of tourmaline used as a gem: not a true sapphire.
  • burkitt's lymphoma — a cancer characterized by tumors containing lymphoid cells, occurring esp. in children, in the jaw, eyes, and internal organs: it is associated with the Epstein-Barr virus
  • calliper compasses — an instrument for measuring internal or external dimensions, consisting of two steel legs hinged together
  • camp david accords — a peace treaty between Israel and Egypt issuing from talks at Camp David between Egyptian President Sadat, Israeli Prime Minister Begin, and the host, U.S. President Carter: signed in 1979.
  • cape breton island — an island off SE Canada, in NE Nova Scotia, separated from the mainland by the Strait of Canso: its easternmost point is Cape Breton. Pop: 132 298 (2006). Area: 10 280 sq km (3970 sq miles)
  • cape saint vincent — a headland at the SW extremity of Portugal: scene of several important naval battles, notably in 1797, when the British defeated the French and Spanish
  • capital allowances — the money spent by a company on fixed assets which can be taken off the profits of the company before tax is imposed
  • capital investment — the money that is invested in something
  • capital punishment — Capital punishment is punishment which involves the legal killing of a person who has committed a serious crime such as murder.
  • captain james cook — Frederick Albert, 1865–1940, U.S. physician and polar explorer.
  • cassiopeia's chair — the five brightest stars in the constellation Cassiopeia that seem to form the shape of a W or M
  • castration complex — an unconscious fear of having one's genitals removed, as a punishment for wishing to have sex with a parent
  • chagos archipelago — group of islands in the Indian Ocean 1,180 mi (1,899 km) northeast of Mauritius, comprising the British Indian Ocean Territory: chief island, Diego Garcia
  • championship point — a point that would decide the winner of a match that would decide the championship
  • character graphics — ASCII art
  • child psychologist — a psychologist who specializes in treating children
  • christine de pisan — ?1364–?1430, French poet and prose writer, born in Venice. Her works include ballads, rondeaux, lays, and a biography of Charles V of France
  • christmas shopping — shopping especially for Christmas presents, but also for Christmas food and drink, and all the other things required over the Christmas period.
  • christopher sholes — Christopher Latham [ley-thuh m,, -th uh m] /ˈleɪ θəm,, -ðəm/ (Show IPA), 1819–90, U.S. inventor of the typewriter.
  • chronostratigraphy — The branch of geology concerned with establishing the absolute ages of strata.
  • citizenship papers — the document stating that a naturalized person has been formally declared a citizen
  • claustrophobically — In a claustrophobic way.
  • closed corporation — a corporation the stock of which is owned by a small number of persons and is rarely traded on the open market
  • closed scholarship — a scholarship for which only certain people, such as those from a particular school or with a particular surname, are eligible
  • cock-a-leekie soup — a soup made from a fowl boiled with leeks
  • coitus interruptus — the deliberate withdrawal of the penis from the vagina before ejaculation
  • comb-footed spider — any of numerous spiders constituting the family Theridiidae, having a comblike row of bristles on the tarsi of the hind legs.
  • come to grips with — If you come to grips with a problem, you consider it seriously, and start taking action to deal with it.
  • community hospital — (in the US) a local hospital
  • compact video disc — a compact laser disc that plays both pictures and sound
  • comparison shopper — an employee of a retail store hired to visit competing stores in order to gather information regarding styles, quality, prices, etc., of merchandise offered by competitors.
  • compassion fatigue — the inability to react sympathetically to a crisis, disaster, etc, because of overexposure to previous crises, disasters, etc
  • compassionlessness — The quality, state, or condition of being compassionless; uncompassion.
  • compensation award — an amount of money awarded as compensation in a court case
  • compensation order — (in Britain) the requirement of a court that an offender pay compensation for injury, loss, or damage resulting from an offence, either in preference to or as well as a fine
  • compensation point — the concentration of atmospheric carbon dioxide at which the rate of carbon dioxide uptake by a photosynthesizing plant is exactly balanced by its rate of carbon dioxide release in respiration and photorespiration
  • complementarianism — The doctrine that genders in a society should have complementary roles.
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