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18-letter words containing a, e, r, i, u

  • auxiliary equation — characteristic equation (def 1b).
  • auxiliary language — a language, as Esperanto, Swahili, or English, used for intercommunication by speakers of various other languages.
  • 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 insurance — Aviation insurance is insurance cover for aircraft, and for damage, injury, or loss of life or cargo while traveling on aircraft.
  • avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
  • axis of revolution — an axis in a plane, about which an area is revolved to form a solid of revolution.
  • background reading — reading of related works in order to get contextual information on a topic that you are intending to study or write about
  • bargaining counter — A bargaining counter is the same as a bargaining chip.
  • barium thiosulfate — a white, crystalline, water-insoluble, poisonous solid, BaS 2 O 3 ⋅H 2 O, used chiefly in the manufacture of explosives, matches, paints, and varnishes.
  • 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
  • blissful ignorance — unawareness or inexperience of something unpleasant
  • board of education — a group or agency with responsibility for education
  • breach of security — an act that violates a country, area, or building's security measures
  • bread and circuses — something offered as a means of distracting attention from a problem or grievance
  • break your silence — If someone breaks their silence about something, they talk about something that they have not talked about before or for a long time.
  • bring-and-buy sale — A bring-and-buy sale is an informal sale to raise money for a charity or other organization. People who come to the sale bring things to be sold and buy things that other people have brought.
  • 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
  • butler's sideboard — a sideboard, often with a fall front, having on its top a china cabinet with glazed doors.
  • 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.
  • camel's-hair brush — an artist's small brush, made of hair from a squirrel's tail
  • campaign furniture — furniture, as chests or desks, having metal hinges on the corners and handles on the sides.
  • 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
  • cauliflower cheese — a dish of cauliflower with a cheese sauce, eaten hot
  • cauliflower fungus — a large edible white to yellowish cauliflowerlike mushroom, Sparassis radicata, widely distributed in North America.
  • 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.
  • children's crusade — a crusade to recover Jerusalem from the Saracens, undertaken in 1212 by thousands of French and German children who perished, were sold into slavery, or were turned back.
  • cicatricial tissue — scar tissue.
  • 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
  • circulatory system — the system concerned with the transport of blood and lymph, consisting of the heart, blood vessels, lymph vessels, etc
  • citizen journalism — the involvement of non-professionals in reporting news, esp in blogs and other websites
  • 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
  • complexity measure — (algorithm)   A quantity describing the complexity of a computation.
  • computer animation — animated film or video that is generated by computers
  • conceptual realism — the doctrine that universals have real and independent existence.
  • concrete universal — a principle that necessarily has universal import but is also concrete by virtue of its arising in historical situations.
  • concussion grenade — a grenade designed to inflict damage by the force of its detonation rather than by the fragmentation of its casing.
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