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

  • 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.
  • 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.
  • chlorofluorocarbon — Chlorofluorocarbons are the same as CFCs.
  • 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
  • common user access — (programming)   (CUA) The user interface standard of SAA.
  • 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
  • computer-generated — produced by a computer program
  • 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.
  • conductivity water — water that has a conductivity of less than 0.043 × 10–6 S cm–1
  • configuration item — (jargon)   Hardware or software, or an aggregate of both, which is designated by the project configuration manager (or contracting agency) for configuration management.
  • congregate housing — a type of housing in which each individual or family has a private bedroom or living quarters but shares with other residents a common dining room, recreational room, or other facilities.
  • 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
  • connected subgraph — (mathematics)   A connected graph consisting of a subset of the nodes and edges of some other graph.
  • consecrated ground — ground that has been made or declared sacred or holy, and is therefore suitable for Christian burial
  • considered harmful — (programming, humour)   A type of phrase based on the title of Edsger W. Dijkstra's famous note in the March 1968 Communications of the ACM, "Goto Statement Considered Harmful", which fired the first salvo in the structured programming wars. Amusingly, the ACM considered the resulting acrimony sufficiently harmful that it will (by policy) no longer print articles taking so assertive a position against a coding practice. In the ensuing decades, a large number of both serious papers and parodies bore titles of the form "X considered Y". The structured-programming wars eventually blew over with the realisation that both sides were wrong, but use of such titles has remained as a persistent minor in-joke.
  • 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.
  • contents insurance — the insurance for the personal property in a household
  • continued fraction — a number plus a fraction whose denominator contains a number and a fraction whose denominator contains a number and a fraction, and so on
  • contract furniture — furniture designed and manufactured for commercial installation, as in offices, waiting rooms, or lobbies.
  • 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
  • coronary care unit — a unit in a hospital dedicated to treating coronary heart disease
  • coronary occlusion — partial or total obstruction of a coronary artery, as by a thrombus, usually resulting in infarction of the myocardium.
  • coronary-care unit — a specialized hospital unit for the early care and treatment of heart-attack patients. Abbreviation: CCU.
  • costume department — the department in a theatre or television company that is responsible for actors' costumes
  • couldn't care less — If you say that you couldn't care less about someone or something, you are emphasizing that you are not interested in them or worried about them. In American English, you can also say that you could care less, with the same meaning.
  • counter-adaptation — the act of adapting.
  • counter-aggression — the action of a state in violating by force the rights of another state, particularly its territorial rights; an unprovoked offensive, attack, invasion, or the like: The army is prepared to stop any foreign aggression.
  • counterattractions — Plural form of counterattraction.
  • counterculturalism — The counterculture movement or lifestyle.
  • counterculturalist — the culture and lifestyle of those people, especially among the young, who reject or oppose the dominant values and behavior of society.
  • countercyclicality — The quality of being countercyclical.
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