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18-letter words containing o, a, n, i, u

  • autoignition point — the minimum temperature at which a substance will undergo spontaneous combustion.
  • autoimmune disease — a disease resulting from a disordered immune reaction in which antibodies are produced against one's own tissues, as systemic lupus erythematosus or rheumatoid arthritis.
  • autokinetic effect — apparent motion of a single point of light or a small object when presented on a dark field and observed continuously.
  • automatic tracking — a radar tracking system in which an automatic device uses the echo signal from the tracked object to keep the radar constantly beamed on target and to compute the range of the object.
  • auxiliary equation — characteristic equation (def 1b).
  • 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.
  • background reading — reading of related works in order to get contextual information on a topic that you are intending to study or write about
  • balanced computing — (jargon)   Matching computer tools to job activities so that the computer system structure parallels the organisation structure and work functions. Both personal computers and employees operate in a decentralised environment with monitoring of achievement of management objectives from centralised corporate systems.
  • bargaining counter — A bargaining counter is the same as a bargaining chip.
  • beaujolais nouveau — the first Beaujolais wine of the season, usually available for sale within two months after the grapes are harvested.
  • beauty competition — a competition in which the participants, usually women, are judged on their attractiveness, with a prize, and often a title, awarded to the winner
  • behaviour patterns — the characteristic ways in which a person or animal acts
  • bernoulli equation — Hydrodynamics. Bernoulli's theorem (def 2).
  • bill of quantities — a document drawn up by a quantity surveyor providing details of the prices, dimensions, etc, of the materials required to build a large structure, such as a factory
  • 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
  • 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
  • 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.
  • broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
  • business education — education for general knowledge of business practices.
  • 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.
  • california fuchsia — a North American onagraceous plant, Zauschneria californica, with tubular scarlet flowers
  • california-fuchsia — a plant belonging to the genus Fuchsia, of the evening primrose family, including many varieties cultivated for their handsome drooping flowers.
  • call into question — to raise a question or doubt about
  • 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)
  • 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
  • cassius (longinus) — (Gaius)died 42 b.c.; Rom. general & conspirator against Caesar
  • catalogue raisonne — a descriptive catalogue, esp one covering works of art in an exhibition or collection
  • catskill mountains — a mountain range in SE New York State: resort. Highest peak: Slide Mountain, 1261 m (4204 ft)
  • caucasus mountains — a mountain range in SW Russia, running along the N borders of Georgia and Azerbaijan, between the Black Sea and the Caspian Sea: mostly over 2700 m (9000 ft). Highest peak: Mount Elbrus, 5642 m (18 510 ft)
  • cauliflower fungus — a large edible white to yellowish cauliflowerlike mushroom, Sparassis radicata, widely distributed in North America.
  • causa sine qua non — an indispensable condition; requisite.
  • charge conjugation — the mathematical operation of replacing every elementary particle by its antiparticle. Symbol: C.
  • chebyshev equation — Tchebycheff equation.
  • circumnavigational — Relating to circumnavigation.
  • citizen journalism — the involvement of non-professionals in reporting news, esp in blogs and other websites
  • coastguard station — the headquarters or local offices of a coastguard
  • colloidal solution — a mixture having particles of one component, with diameters between 10 −7 and 10 −9 metres, suspended in a continuous phase of another component. The mixture has properties between those of a solution and a fine suspension
  • 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
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