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18-letter words containing c, o, a, e

  • functional testing — (testing)   (Or "black-box testing", "closed-box testing") The application of test data derived from functional requirements without regard to how the system is implemented.
  • funeral procession — ceremonial cortège at a burial
  • galactic longitude — the angular distance in degrees measured eastward in the galactic plane from a radius drawn from the earth as center to the constellation Sagittarius.
  • galilean telescope — a refracting telescope that forms an erect image, consisting of an objective of relatively long focal length that causes light rays to converge and an eyepiece of short focal length that causes them to diverge.
  • garbage collection — (programming)   (GC) The process by which dynamically allocated storage is reclaimed during the execution of a program. The term usually refers to automatic periodic storage reclamation by the garbage collector (part of the run-time system), as opposed to explicit code to free specific blocks of memory. Automatic garbage collection is usually triggered during memory allocation when the amount free memory falls below some threshold or after a certain number of allocations. Normal execution is suspended and the garbage collector is run. There are many variations on this basic scheme. Languages like Lisp represent expressions as graphs built from cells which contain pointers and data. These languages use automatic dynamic storage allocation to build expressions. During the evaluation of an expression it is necessary to reclaim space which is used by subexpressions but which is no longer pointed to by anything. This reclaimed memory is returned to the free memory pool for subsequent reallocation. Without garbage collection the program's memory requirements would increase monotonically throughout execution, possibly exceeding system limits on virtual memory size. The three main methods are mark-sweep garbage collection, reference counting and copying garbage collection. See also the AI koan about garbage collection.
  • gas-cooled reactor — a nuclear reactor using a gas as the coolant. In the Mark I type the coolant is carbon dioxide, the moderator is graphite, and the fuel is uranium cased in magnox
  • gene amplification — an increase in the frequency of replication of a DNA segment.
  • general confession — a prayer confessing sins
  • general contractor — a person who contracts to construct a building or buildings, for a stipulated sum, in accordance with certain plans and specifications, or to remodel or build an addition to a building
  • general precession — the precession that results from both lunisolar precession and planetary precession; precession of the equinoxes.
  • genetic algorithms — genetic algorithm
  • geneva conventions — one of a series of international agreements, first made in Geneva, Switzerland, in 1864, establishing rules for the humane treatment of prisoners of war and of the sick, the wounded, and the dead in battle.
  • gensym corporation — (company)   A company that supplies software and services for intelligent operations management. Common applications include quality management, process optimisation, dynamic scheduling, network management, energy and environmental management, and process modelling and simulation. Their products include G2.
  • gentleman-commoner — (formerly) a member of a class of commoners enjoying special privileges at Oxford University.
  • geometrical optics — the branch of optics dealing with light as rays, especially in the study of the effects of lenses and mirrors on light beams and of their combination in optical instruments.
  • gestalt psychology — (sometimes lowercase) the theory or doctrine that physiological or psychological phenomena do not occur through the summation of individual elements, as reflexes or sensations, but through gestalts functioning separately or interrelatedly.
  • get one's own back — of, relating to, or belonging to oneself or itself (usually used after a possessive to emphasize the idea of ownership, interest, or relation conveyed by the possessive): He spent only his own money.
  • giant peacock moth — the largest European moth, an emperor, Saturnia pyri, reaching 15 cm (6 in.) in wingspan. It is mottled brown with a prominent ocellus on each wing and being night-flying can be mistaken for a bat
  • glyceryl trioleate — olein.
  • go back to the mat — to abandon urban civilization
  • go off half-cocked — (of a firearm) at the position of half cock.
  • golden bantam corn — a horticultural variety of sweet corn having yellow kernels.
  • good conduct medal — a medal awarded an enlisted person for meritorious behavior during the period of service.
  • goods and chattels — personal property
  • gooseneck barnacle — goose barnacle
  • goya (y lucientes) — Fran‧ˈcis‧co Jo‧ˈsé‧ de (fʀɑnˈθiskɔhɔˈsɛ ðɛ) ; fränt hēsˈk^ōh^ōseˈ the) 1746-1828; Sp. painter
  • grand canyon state — Arizona (used as a nickname).
  • grand council fire — a formal gathering of camp fire members requiring a minimum attendance of three troops.
  • great expectations — a novel (1861) by Charles Dickens.
  • greater pichiciego — an armadillo, Burmeisteria retusa, similar to, but larger than, a pichiciego
  • green-backed heron — a small, American heron, Butorides striatus, having glossy green wings.
  • gregorian calendar — the reformed Julian calendar now in use, according to which the ordinary year consists of 365 days, and a leap year of 366 days occurs in every year whose number is exactly divisible by 4 except centenary years whose numbers are not exactly divisible by 400, as 1700, 1800, and 1900.
  • guidance counselor — advisor in schools
  • gyromagnetic ratio — the ratio of the magnetic moment of a rotating charged particle to its angular momentum.
  • haemorrhagic fever — any of a group of fevers, such as Ebola virus disease and yellow fever, characterized by internal bleeding or bleeding into the skin
  • haulage contractor — a person or firm that transports goods by lorry
  • have a screw loose — a metal fastener having a tapered shank with a helical thread, and topped with a slotted head, driven into wood or the like by rotating, especially by means of a screwdriver.
  • have on one's back — to be burdened with
  • health care worker — A health care worker is someone who works in a hospital or health centre.
  • heat of combustion — the heat evolved when one mole of a substance is burnt in oxygen at constant volume
  • hebdomadal council — the governing council or senate of Oxford University
  • heimlich manoeuvre — a technique in first aid to dislodge a foreign body in a person's windpipe by applying sudden upward pressure on the upper abdomen
  • helicopter station — a place where helicopters are kept in readiness for use
  • heptadecanoic acid — a colourless crystalline water-insoluble carboxylic acid used in organic synthesis. Formula: CH3(CH2)15COOH
  • heteroscedasticity — (statistics) The property of a series of random variables of 'not' every variable having the same finite variance.
  • heteroskedasticity — Alternative spelling of heteroscedasticity.
  • hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
  • higher-order macro — A means of expressing certain higher-order functions in a first order language. Proposed by Phil Wadler. Higher-order macros cannot be recursive at the top level but they may contain recursive definitions. E.g. See partial evaluation.
  • hippocratic facies — the sallow facial expression, with listless staring eyes, often regarded as denoting approaching death
  • historical geology — the branch of geology dealing with the history of the earth.
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