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18-letter words containing a, p, r, i, o

  • biological therapy — biotherapy
  • 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.
  • blocking capacitor — a capacitor that blocks the passage of direct current but allows alternating current to pass
  • 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
  • c-reactive protein — a globulin in the blood produced by the liver in response to inflammation
  • calcium propionate — a white, water-soluble powder, CaC 6 H 10 O 4 , used in bakery products to inhibit the growth of fungi.
  • 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)
  • 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
  • central projection — a projection of one plane onto a second plane such that a point on the first plane and its image on the second plane lie on a straight line through a fixed point not on either plane.
  • 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
  • checkpoint charlie — a crossing between East and West Berlin during the Cold War
  • christmas shopping — shopping especially for Christmas presents, but also for Christmas food and drink, and all the other things required over the Christmas period.
  • chromatic printing — printing from blocks or types inked with various colours
  • chromolithographer — One engaged in chromolithography.
  • chromolithographic — Pertaining to, or made by, chromolithography.
  • chronostratigraphy — The branch of geology concerned with establishing the absolute ages of strata.
  • 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
  • combined operation — a military operation carried out jointly by allied forces
  • commando operation — a major operation for treatment of cancer of the head and neck, involving removal of many facial structures and subsequent surgical reconstruction
  • comparative method — a body of procedures and criteria used by linguists to determine whether and how two or more languages are related and to reconstruct forms of their hypothetical parent language.
  • 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.
  • compartmentalizing — Present participle of compartmentalize.
  • 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
  • complementarianism — The doctrine that genders in a society should have complementary roles.
  • complexity measure — (algorithm)   A quantity describing the complexity of a computation.
  • compliance officer — a specialist, usually a lawyer, employed by a financial group operating in a variety of fields and for multiple clients to ensure that no conflict of interest arises and that all obligations and regulations are complied with
  • 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.
  • computer animation — animated film or video that is generated by computers
  • concentration camp — A concentration camp is a prison in which large numbers of ordinary people are kept in very bad conditions, usually during a war.
  • concentration span — the length of time a person can concentrate on something
  • conceptual realism — the doctrine that universals have real and independent existence.
  • conjugated protein — a biochemical compound consisting of a sequence of amino acids making up a simple protein to which another nonprotein group (a prosthetic group), such as a carbohydrate or lipid group, is attached
  • conservative party — The Conservative Party is the main right-of-centre party in Britain.
  • constituency party — a branch of a political party operating within a constituency
  • construction paper — Construction paper is a type of stiff, colored paper that children use for drawing and for making things.
  • controllable-pitch — (of a marine or aircraft propeller) having blades whose pitch can be changed during navigation or flight; variable-pitch.
  • conversation piece — something, esp an unusual object, that provokes conversation
  • cornucopian thesis — the belief that, as long as science and technology continue to advance, growth can continue for ever because these new advances create new resources
  • corporate anorexia — a malaise of a business organization resulting from making too many creative people redundant in efforts to cut costs
  • corporate identity — business brand
  • corpus christi bay — a bay in S Texas, at the mouth of the Nueces River.
  • counter-adaptation — the act of adapting.
  • counterprogramming — the practice of scheduling a program opposite another program, esp. a popular one, that appeals to a different kind of audience, as in placing a romantic film directed at women opposite a sports program mainly watched by men
  • countertherapeutic — Working against a therapy.
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