0%

18-letter words containing t, r, a, g, i, c

  • electroretinograms — Plural form of electroretinogram.
  • environment agency — an official agency providing information on environmental issues, esp rivers, flooding and pollution
  • equinoctial spring — either of the two highest spring tides that occur at the equinoxes
  • euclid's algorithm — (algorithm)   (Or "Euclidean Algorithm") An algorithm for finding the greatest common divisor (GCD) of two numbers. It relies on the identity gcd(a, b) = gcd(a-b, b) To find the GCD of two numbers by this algorithm, repeatedly replace the larger by subtracting the smaller from it until the two numbers are equal. E.g. 132, 168 -> 132, 36 -> 96, 36 -> 60, 36 -> 24, 36 -> 24, 12 -> 12, 12 so the GCD of 132 and 168 is 12. This algorithm requires only subtraction and comparison operations but can take a number of steps proportional to the difference between the initial numbers (e.g. gcd(1, 1001) will take 1000 steps).
  • feeping creaturism — /fee'ping kree"ch*r-izm/ A deliberate spoonerism for creeping featurism, meant to imply that the system or program in question has become a misshapen creature of hacks. This term isn"t really well defined, but it sounds so neat that most hackers have said or heard it. It is probably reinforced by an image of terminals prowling about in the dark making their customary noises.
  • fibrocartilaginous — a type of cartilage having a large number of fibers.
  • fuming nitric acid — a colorless, yellowish, or brownish fuming corrosive liquid, usually prepared from nitric acid by the addition of excess nitrogen dioxide: used in organic synthesis for nitration, and as an oxidizer in liquid propellants for rockets.
  • functional program — (language)   A program employing the functional programming approach or written in a functional language.
  • 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-discharge tube — any tube in which an electric discharge takes place through a gas
  • genetic algorithms — genetic algorithm
  • 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.
  • 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.
  • german east africa — a former German territory in E Africa, the area now comprised of continental Tanzania and the independent republics of Rwanda and Burundi.
  • glyceryl trioleate — olein.
  • graduated cylinder — a narrow, cylindrical container marked with horizontal lines to represent units of measurement and used to precisely measure the volume of liquids.
  • grammatical gender — gender based on arbitrary assignment, without regard to the referent of a noun, as in French le livre (masculine), “the book,” and German das Mädchen (neuter), “the girl.”.
  • gravity escapement — an escapement, used especially in large outdoor clocks, in which the impulse is given to the pendulum by means of a weight falling through a certain distance.
  • great expectations — a novel (1861) by Charles Dickens.
  • great-circle track — the route of a ship following the arc of a great circle, appearing as a curved line on a Mercator chart and as a straight line on a gnomonic chart.
  • greater pichiciego — an armadillo, Burmeisteria retusa, similar to, but larger than, a pichiciego
  • gyromagnetic ratio — the ratio of the magnetic moment of a rotating charged particle to its angular momentum.
  • heart-lung machine — a device through which blood is shunted temporarily for oxygenation during surgery, while the heart or a lung is being repaired.
  • higher mathematics — the advanced portions of mathematics, customarily considered as embracing all beyond ordinary arithmetic, geometry, algebra, and trigonometry.
  • histomorphological — histology.
  • historical geology — the branch of geology dealing with the history of the earth.
  • hypogastric artery — iliac artery (def 3).
  • incidental charges — Incidental charges are costs of items and services that are not part of the main bill.
  • indiscriminatingly — In an indiscriminating manner.
  • induction training — training intended to enable new staff and recruits to do their work
  • integrated circuit — a circuit of transistors, resistors, and capacitors constructed on a single semiconductor wafer or chip, in which the components are interconnected to perform a given function. Abbreviation: IC.
  • integrating factor — a factor that upon multiplying a differential equation with the right-hand side equal to zero makes the equation integrable, usually by making the resulting expression an exact differential of some function.
  • intercartilaginous — (anatomy) Within cartilage.
  • interchangeability — (of two things) capable of being put or used in the place of each other: interchangeable symbols.
  • interlacing arcade — an arcade, especially a blind one, composed of arches (interlacing arches) so arranged and cut that each arch seems to intersect and be intersected by one or more other arches.
  • iomega corporation — (company, storage)   A storage device manufacturer whose major products are the Zip and Jaz removable disk drives and Ditto tape drives. They became popular with an early product called the Bernoulli Box. These products fall in line with their focus set in 1994 "to help people manage their stuff". The company's stated aim is to create portable, fast, large and cheap storage solutions. Iomega's major competitor in the growing market for removable disks is SyQuest, who seem to always be a few weeks behind them. In general, Iomega target the Small Office/Home Office. They are also investigating the growing digital photography market which also needs large removable storage devices. Iomega's president and CEO is Kim Edwards. They have nearly 2000 employees in offices world-wide. Revenue for the quarter ending Dec 1996 was $371 million and net income was $20 million. Headquarters: Roy, Utah, USA.
  • labeled bracketing — a representation of the constituent structure of a string, as a word or sentence, comparable to a tree diagram, in which each constituent is shown in brackets and given a subscript grammatical label, with each bracketed item corresponding to a node in a tree diagram.
  • lactogenic hormone — prolactin.
  • lean manufacturing — efficiency in the production of goods
  • legislative branch — the branch of government having the power to make laws; the legislature.
  • lighting cameraman — the person who designs and supervises the lighting of scenes to be filmed
  • lithostratigraphic — Of or pertaining to lithostratigraphy.
  • logarithmic spiral — log r = aθ
  • magic switch story — Some years ago, I was snooping around in the cabinets that housed the MIT AI Lab's PDP-10, and noticed a little switch glued to the frame of one cabinet. It was obviously a homebrew job, added by one of the lab's hardware hackers (no-one knows who). You don't touch an unknown switch on a computer without knowing what it does, because you might crash the computer. The switch was labelled in a most unhelpful way. It had two positions, and scrawled in pencil on the metal switch body were the words "magic" and "more magic". The switch was in the "more magic" position. I called another hacker over to look at it. He had never seen the switch before either. Closer examination revealed that the switch had only one wire running to it! The other end of the wire did disappear into the maze of wires inside the computer, but it's a basic fact of electricity that a switch can't do anything unless there are two wires connected to it. This switch had a wire connected on one side and no wire on its other side. It was clear that this switch was someone's idea of a silly joke. Convinced by our reasoning that the switch was inoperative, we flipped it. The computer instantly crashed. Imagine our utter astonishment. We wrote it off as coincidence, but nevertheless restored the switch to the "more magic" position before reviving the computer. A year later, I told this story to yet another hacker, David Moon as I recall. He clearly doubted my sanity, or suspected me of a supernatural belief in the power of this switch, or perhaps thought I was fooling him with a bogus saga. To prove it to him, I showed him the very switch, still glued to the cabinet frame with only one wire connected to it, still in the "more magic" position. We scrutinized the switch and its lone connection, and found that the other end of the wire, though connected to the computer wiring, was connected to a ground pin. That clearly made the switch doubly useless: not only was it electrically nonoperative, but it was connected to a place that couldn't affect anything anyway. So we flipped the switch. The computer promptly crashed. This time we ran for Richard Greenblatt, a long-time MIT hacker, who was close at hand. He had never noticed the switch before, either. He inspected it, concluded it was useless, got some diagonal cutters and diked it out. We then revived the computer and it has run fine ever since. We still don't know how the switch crashed the machine. There is a theory that some circuit near the ground pin was marginal, and flipping the switch changed the electrical capacitance enough to upset the circuit as millionth-of-a-second pulses went through it. But we'll never know for sure; all we can really say is that the switch was magic. I still have that switch in my basement. Maybe I'm silly, but I usually keep it set on "more magic".
  • magistrate's court — a court having limited jurisdiction over minor civil and criminal matters, as matters of contract not exceeding a particular amount of money.
  • magistrates' court — law: handles minor crimes
  • magnetic amplifier — an amplifier that applies the input signal to a primary winding and feeds an alternating current to a secondary winding where this current is modulated by the variations in the primary winding.
  • magnetic recording — the process of recording sound or other data on magnetic tape, wire, etc.
  • magnetic resonance — the response by atoms, molecules, or nuclei subjected to a magnetic field to radio waves or other forms of energy: used in medicine for scanning
  • magnetic variation — variation (def 8).
Was this page helpful?
Yes No
Thank you for your feedback! Tell your friends about this page
Tell us why?