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18-letter words containing a, n, t, i

  • biological control — the control of destructive organisms by the use of other organisms, such as the natural predators of the pests
  • 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.
  • blackwater rafting — the sport of riding through underground caves on a large rubber tube
  • blanche of castile — ?1188–1252, queen consort (1223–26) of Louis VIII of France, born in Spain. The mother of Louis IX, she acted as regent during his minority (1226–36) and his absence on a crusade (1248–52)
  • blocking capacitor — a capacitor that blocks the passage of direct current but allows alternating current to pass
  • board of education — a group or agency with responsibility for education
  • board of elections — a bipartisan board appointed usually by local authorities and charged with control of elections and voting procedure.
  • bomb disposal unit — a unit of the police or armed services specializing in bomb disposal
  • boole's inequality — the theorem that the probability of several events occurring is less than or equal to the sum of the probabilities of each event occurring.
  • boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
  • branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
  • branch to fishkill — (IBM: from the location of one of the corporation's facilities) Any unexpected jump in a program that produces catastrophic or just plain weird results. See jump off into never-never land, hyperspace.
  • branching fraction — (in branching) the proportion of the disintegrating nuclei that follow a particular branch to the total number of disintegrating nuclides
  • break the internet — to cause a large number of people to attempt to access the internet
  • breathing exercise — an exercise intended to promote effective and healthy breathing and breath control
  • british somaliland — a former British protectorate (1884–1960) in E Africa, on the Gulf of Aden: united with Italian Somaliland in 1960 to form Somalia (or the Somali Republic); in 1991 the self-styled republic of Somaliland, covering the same area as the former British Somaliland, declared itself independent and continues to function largely as a separate entity, though without international recognition
  • broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
  • broken twill weave — a twill weave in which the direction of the diagonal produced by the weft threads is reversed after no more than two passages of the weft.
  • building materials — materials such as bricks, cement, timber, etc
  • business education — education for general knowledge of business practices.
  • by fits and starts — spasmodically; without concerted effort
  • c-reactive protein — a globulin in the blood produced by the liver in response to inflammation
  • cabernet sauvignon — a black grape originally grown in the Bordeaux area of France, and now throughout the wine-producing world
  • cabinet government — parliamentary government.
  • calcium propionate — a white, water-soluble powder, CaC 6 H 10 O 4 , used in bakery products to inhibit the growth of fungi.
  • california current — a cold current originating in the northern part of the Pacific Ocean, flowing SE along the coast of W North America.
  • call into question — to raise a question or doubt about
  • calling convention — (programming)   The arrangement of arguments for a procedure or function call. Different programming languages may require arguments to be pushed onto a stack or entered in registers in left-to-right or right-to left order, and either the caller or the callee can be responsible for removing the arguments. The calling convention also determines if a variable number of arguments is allowed.
  • cambrian mountains — a mountain range in Wales, extending from Carmarthenshire in the S to Denbighshire in the N. Highest peak: Aran Fawddwy, 891 m (2970 ft)
  • campaign furniture — furniture, as chests or desks, having metal hinges on the corners and handles on the sides.
  • can stick/to stick — If you say that someone can stick something, especially a job, or if you tell them where to stick it, you are rudely refusing it or emphasizing that you do not want it or like it.
  • can't take a trick — to be consistently unsuccessful or unlucky
  • cap of maintenance — a ceremonial cap or hat worn or carried as a symbol of office, rank, etc
  • 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.
  • carthaginian peace — the treaty by which Rome reduced Carthage to the status of a puppet state in 201 b.c.
  • cartilaginous fish — any fish of the class Chondrichthyes, including the sharks, skates, and rays, having a skeleton composed entirely of cartilage
  • cash-for-questions — of, involved in, or relating to a scandal in which some MPs were accused of accepting bribes to ask particular questions in Parliament
  • castration complex — an unconscious fear of having one's genitals removed, as a punishment for wishing to have sex with a parent
  • casualty insurance — insurance providing coverage against accident and property damages, as automobile, theft, liability, and explosion insurance, but not including life insurance, fire insurance, or marine insurance.
  • catalogue raisonne — a descriptive catalogue, esp one covering works of art in an exhibition or collection
  • catalonian jasmine — a shrub, Jasminum grandiflorum, of India, having crimson-tinged, fragrant white flowers, grown as an ornamental and for perfume.
  • catalytic cracking — a method used in the petroleum industry for the cracking of petroleum by catalysis
  • catapult launching — the fact of launching aircraft into the air by a device installed in warships
  • catcher in the rye — a novel (1951) by J. D. Salinger.
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