18-letter words containing s, p, c
- 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
- catastrophe theory — a mathematical theory that classifies surfaces according to their form
- cathode dark space — Crookes dark space.
- centre of pressure — the point in a body at which the resultant pressure acts when the body is immersed in a fluid
- 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
- change one's spots — to reform one's character
- 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.
- clean up one's act — to start to behave in a responsible manner
- cleopatra's needle — either of two Egyptian obelisks, originally set up at Heliopolis about 1500 bc: one was moved to the Thames Embankment, London, in 1878, the other to Central Park, New York, in 1880
- 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
- color transparency — a positive color image photographically produced on transparent film or glass and viewed by transmitted light, usually by projection.
- 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.
- complementary base — either of the nucleotide bases linked by a hydrogen bond on opposite strands of DNA or double-stranded RNA: guanine is the complementary base of cytosine, and adenine is the complementary base of thymine in DNA and of uracil in RNA.
- complexity measure — (algorithm) A quantity describing the complexity of a computation.
- composite function — a function obtained from two given functions, where the range of one function is contained in the domain of the second function, by assigning to an element in the domain of the first function that element in the range of the second function whose inverse image is the image of the element.
- composition rubber — manufactured rubber
- composition series — a normal series of subgroups in which no additional subgroups can be inserted.
- comprehensibleness — The quality of being comprehensible; comprehensibility.
- compression stroke — The compression stroke is the stroke in an engine in which the air or air/fuel mixture is compressed before ignition.
- compressor program — a computer program that compresses data
- compressor station — A compressor station is a facility with several compressors (= devices that increase the pressure of air or natural gas) and other equipment to pump natural gas under pressure over long distances.