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18-letter words containing t, u, r, n, a

  • auxiliary-equation — Mathematics. the characteristic polynomial of a given matrix, equated to zero. Also called auxiliary equation. an equation with one variable and equated to zero, which is derived from a given linear differential equation and in which the coefficient and power of the variable in each term correspond to the coefficient and order of a derivative in the original equation.
  • aviation authority — a body that is responsible for overseeing the aviation industry
  • aviation insurance — Aviation insurance is insurance cover for aircraft, and for damage, injury, or loss of life or cargo while traveling on aircraft.
  • axis of revolution — an axis in a plane, about which an area is revolved to form a solid of revolution.
  • bachelor's-buttons — any of various plants of the daisy family with button-like flower heads
  • back to square one — If you are back to square one, you have to start dealing with something from the beginning again because the way you were dealing with it has failed.
  • bargaining counter — A bargaining counter is the same as a bargaining chip.
  • battle of omdurman — a battle (1898) in which the Mahdi's successor and his Ansar followers were defeated by Lord Kitchener's British forces
  • battleground-state — a state of the U.S. in which the Democratic and Republican candidates both have a good chance of winning and that is considered key to the outcome of a presidential election: the swing states of Ohio and Indiana.
  • behaviour patterns — the characteristic ways in which a person or animal acts
  • bernoulli equation — Hydrodynamics. Bernoulli's theorem (def 2).
  • bioinstrumentation — the use of instruments, as sensors, to detect and measure certain body functions, as of persons in spaceflight, and transmit the data to a point where it is evaluated
  • board of education — a group or agency with responsibility for education
  • boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
  • bounty-fed farmers — farmers who benefit from subsidies
  • bourdon-tube gauge — an instrument for measuring the pressure of gases or liquids, consisting of a semicircular or coiled, flexible metal tube attached to a gauge that records the degree to which the tube is straightened by the pressure of the gas or liquid inside.
  • branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
  • brand-name product — A brand-name product is one which is made by a well-known manufacturer and has the manufacturer's label on it.
  • broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
  • building materials — materials such as bricks, cement, timber, etc
  • butter-and-egg man — a prosperous businessman from a small town or a farmer who spends his money ostentatiously on visits to a big city.
  • cabernet sauvignon — a black grape originally grown in the Bordeaux area of France, and now throughout the wine-producing world
  • 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.
  • 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.
  • 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
  • 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
  • caterpillar hunter — any of various carabid beetles of the genus Calosoma, of Europe and North America, which prey on the larvae of moths and butterflies
  • cellular automaton — (algorithm, parallel)   (CA, plural "- automata") A regular spatial lattice of "cells", each of which can have any one of a finite number of states. The state of all cells in the lattice are updated simultaneously and the state of the entire lattice advances in discrete time steps. The state of each cell in the lattice is updated according to a local rule which may depend on the state of the cell and its neighbors at the previous time step. Each cell in a cellular automaton could be considered to be a finite state machine which takes its neighbours' states as input and outputs its own state. The best known example is J.H. Conway's game of Life.
  • cellular telephone — a mobile phone
  • centrifugal clutch — an automatic clutch in which the friction surfaces are engaged by weighted levers acting under centrifugal force at a certain speed of rotation
  • chambered nautilus — nautilus (def 1).
  • character-building — improving certain good or useful traits in a person's character, esp self-reliance, endurance, and courage
  • charge conjugation — the mathematical operation of replacing every elementary particle by its antiparticle. Symbol: C.
  • church of scotland — the established church in Scotland, Calvinist in doctrine and Presbyterian in constitution
  • circular breathing — a technique for sustaining a phrase on a wind instrument, using the cheeks to force air out of the mouth while breathing in through the nose
  • circulating medium — currency serving as a medium of exchange
  • circumnavigational — Relating to circumnavigation.
  • citizen journalism — the involvement of non-professionals in reporting news, esp in blogs and other websites
  • clark's nutcracker — a nutcracker, Nucifraga columbiana, of western North America, having pale gray plumage and black and white wings and tail.
  • coastguard station — the headquarters or local offices of a coastguard
  • colour commentator — a sports celebrity who works as part of a commentary team
  • combination square — an adjustable device for carpenters, used as a try square, miter square, level, etc.
  • combustion chamber — an enclosed space in which combustion takes place, such as the space above the piston in the cylinder head of an internal-combustion engine or the chambers in a gas turbine or rocket engine in which fuel and oxidant burn
  • combustion furnace — a furnace used in the laboratory to carry out elemental analysis of organic compounds
  • communication cord — a cord or chain in a train which may be pulled by a passenger to stop the train in an emergency
  • computer animation — animated film or video that is generated by computers
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