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15-letter words containing r, o, t, g, a

  • graph reduction — A technique invented by Chris Wadsworth where an expression is represented as a directed graph (usually drawn as an inverted tree). Each node represents a function call and its subtrees represent the arguments to that function. Subtrees are replaced by the expansion or value of the expression they represent. This is repeated until the tree has been reduced to a value with no more function calls (a normal form). In contrast to string reduction, graph reduction has the advantage that common subexpressions are represented as pointers to a single instance of the expression which is only reduced once. It is the most commonly used technique for implementing lazy evaluation.
  • graviperception — the perception of gravity by plants
  • gravitationally — As a result of the force of gravity.
  • gravity anomaly — a deviation from the normal value of gravity at the earth's surface, caused by density differences at depth, for example those caused by a buried mineral body
  • great attractor — a vast concentration of matter whose gravitational pull alters the direction and speed of the Milky Way and other galaxies as they spread apart in the expanding universe posited by the big bang theory.
  • great rebellion — English Civil War.
  • great recession — the protracted worldwide economic recession following the financial crisis of 2007–08
  • great south bay — an Atlantic Ocean inlet, between the S shore of Long Island and Fire Island and other barrier islands. 45 miles (72 km) long.
  • great synagogue — (according to Jewish tradition) a council of 120 members, established by Ezra, that directed the Jews chiefly in religious matters, c450–c200 b.c., and made significant contributions to the Jewish liturgy and Bible.
  • greater omentum — the peritoneal fold attached to the stomach and the colon and hanging over the small intestine.
  • green mountains — a mountain range in E North America, extending from Canada through Vermont into W Massachusetts: part of the Appalachian system. Highest peak: Mount Mansfield, 1338 m (4393 ft)
  • gregorian chant — the plain song or cantus firmus used in the ritual of the Roman Catholic Church.
  • gregorian water — a mixture of water, salt, ashes, and wine, blessed and sprinkled over the altar in the consecration of a church.
  • grind to a halt — If a country's economy or something such as a process grinds to a halt, it gradually becomes slower or less active until it stops.
  • group separator — (character)   (GS) ASCII character 29.
  • group therapist — a psychotherapist who conducts group therapy
  • guaranteed bond — a bond issued by a corporation in which payment of the principal, interest, or both is guaranteed by another corporation.
  • gulf of taranto — an inlet of the Ionian Sea, in Apulia in SE Italy
  • guru meditation — (operating system)   The Amiga equivalent of Unix's panic (sometimes just called a "guru" or "guru event"). When the system crashes, a cryptic message of the form "GURU MEDITATION #XXXXXXXX.YYYYYYYY" may appear, indicating what the problem was. An Amiga guru can figure things out from the numbers. In the earliest days of the Amiga, there was a device called a "Joyboard" which was basically a plastic board built onto a joystick-like device; it was sold with a skiing game cartridge for the Atari game machine. It is said that whenever the prototype OS crashed, the system programmer responsible would concentrate on a solution while sitting cross-legged, balanced on a Joyboard, resembling a meditating guru. Sadly, the joke was removed in AmigaOS 2.04. The Jargon File claimed that a guru event had to be followed by a Vulcan nerve pinch but, according to a correspondent, a mouse click was enough to start a reboot.
  • gyrostabilizers — Plural form of gyrostabilizer.
  • hair hygrometer — a hygrometer actuated by the changes in length of a strand of human hair brought about by changes in the relative humidity.
  • hair of the dog — an alcoholic drink taken as an antidote to a hangover
  • halting problem — The problem of determining in advance whether a particular program or algorithm will terminate or run forever. The halting problem is the canonical example of a provably unsolvable problem. Obviously any attempt to answer the question by actually executing the algorithm or simulating each step of its execution will only give an answer if the algorithm under consideration does terminate, otherwise the algorithm attempting to answer the question will itself run forever. Some special cases of the halting problem are partially solvable given sufficient resources. For example, if it is possible to record the complete state of the execution of the algorithm at each step and the current state is ever identical to some previous state then the algorithm is in a loop. This might require an arbitrary amount of storage however. Alternatively, if there are at most N possible different states then the algorithm can run for at most N steps without looping. A program analysis called termination analysis attempts to answer this question for limited kinds of input algorithm.
  • have a right to — be entitled to
  • height-to-paper — the standard height of type, measured from the foot to the face, in the U.S. 0.918 of an inch (2.33 cm).
  • herod the great — ("the Great") 73?–4 b.c, king of Judea 37–4.
  • hierogrammatist — a writer of hierograms, hierogrammate
  • historiographer — a historian, especially one appointed to write an official history of a group, period, or institution.
  • historiographic — the body of literature dealing with historical matters; histories collectively.
  • holding pattern — a traffic pattern for aircraft at a specified location (holding point) where they are ordered to remain until permitted to land or proceed.
  • honey tangerine — a citrus fruit with a deep-orange pulp, formed by crossing a tangerine and a sweet orange hybrid; Murcott
  • hovering accent — indeterminacy as to which of two consecutive syllables in a line of verse bears the metrical stress, as in any of the first three feet of Slow, slow, / fresh fount, / keep time / with my / salt tears.
  • humphrey bogart — Humphrey (DeForest) ("Bogie"or"Bogey") 1899–57, U.S. motion-picture actor.
  • hunting leopard — the cheetah.
  • huntington park — a city in SW California, near Los Angeles.
  • hydrofracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
  • hydrometallurgy — the technique or process of extracting metals at ordinary temperatures by leaching ore with liquid solvents.
  • hyetometrograph — an instrument used to record rainfall
  • hypergalactosis — an abnormally large secretion of milk.
  • image converter — a device for producing a visual image formed by other electromagnetic radiation such as infrared or ultraviolet radiation or X-rays
  • indicator light — a device for indicating that a motor vehicle is about to turn left or right; blinker
  • information age — a period beginning about 1975 and characterized by the gathering and almost instantaneous transmission of vast amounts of information and by the rise of information-based industries.
  • integral domain — a commutative ring in which the cancellation law holds true.
  • integrationists — Plural form of integrationist.
  • intercollegiate — taking place between or participating in activities between different colleges: intercollegiate athletics.
  • interdigitation — An interlinking that resembles the fingers of two hands being locked together.
  • intergeneration — the entire body of individuals born and living at about the same time: the postwar generation.
  • interiorscaping — The design, installation, and maintenance of interiorscapes.
  • interrecord gap — the area or space separating consecutive physical records of data on an external storage medium.
  • interrogatingly — So as to interrogate; with urgent or bullying questioning.
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