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22-letter words containing s, p, c

  • landscape architecture — the art of arranging or modifying the features of a landscape, an urban area, etc., for aesthetic or practical reasons.
  • last call optimisation — (programming)   (Or "tail call optimisation") Discarding the immediate calling context (call stack frame) when the last action of a function or procedure, A, is to call another function or procedure, B. B will then return directly to A's caller, or possibly further up the call stack if the optimisation has been applied to several consecutive calls. Last call optimisation allows arbitrarily deep nesting of procedure calls without consuming memory to store useless environments. This is particularly useful in the special case of tail recursion optimisation, where a procedure's last action is to call itself (possibly indirectly).
  • lempel-ziv compression — Substitutional compression schemes proposed by Jakob Ziv and Abraham Lempel in 1977 and 1978. There are two main schemes, LZ77 and LZ78. Lempel-Ziv Welch compression is a variant of LZ78.
  • lesser prairie chicken — either of two North American gallinaceous birds of western prairies, Tympanuchus cupido (greater prairie chicken) or T. pallidicinctus (lesser prairie chicken) having rufous, brown, black, and white plumage.
  • lethargic encephalitis — sleeping sickness (def 2).
  • liquid crystal display — (hardware)   (LCD) An electro-optical device used to display digits, characters or images, commonly used in digital watches, calculators, and portable computers. The heart of the liquid crystal display is a piece of liquid crystal material placed between a pair of transparent electrodes. The liquid crystal changes the phase of the light passing through it and this phase change can be controlled by the voltage applied between the electrodes. If such a unit is placed between a pair of plane polariser plates then light can pass through it only if the correct voltage is applied. Liquid crystal displays are formed by integrating a number of such cells, or more usually, by using a single liquid crystal plate and a pattern of electrodes. The simplest kind of liquid crystal displays, those used in digital watches and calculators, contain a common electrode plane covering one side and a pattern of electrodes on the other. These electrodes can be individually controlled to produce the appropriate display. Computer displays, however, require far too many pixels (typically between 50,000 and several millions) to make this scheme, in particular its wiring, feasible. The electrodes are therefore replaced by a number of row electrodes on one side and column electrodes on the other. By applying voltage to one row and several columns the pixels at the intersections are set. The pixels being set one row after the other, in passive matrix displays the number of rows is limited by the ratio of the setting and fading times. In the setup described above (known as "twisted nematic") the number of rows is limited to about 20. Using an alternative "supertwisted nematic" setup VGA quality displays (480 rows) can be easily built. As of 1995 most notebook computers used this technique. Fading can be slowed by putting an active element, such as a transistor, on the top of each pixel. This "remembers" the setting of that pixel. These active matrix displays are of much better quality (as good as CRTs) but are much more expensive than the passive matrix displays. LCDs are slimmer, lighter and consume less power than the previous dominant display type, the cathode ray tube, hence their importance for portable computers.
  • lord justice of appeal — an ordinary judge of the Court of Appeal
  • lowest common multiple — the smallest number that is a common multiple of a given set of numbers.
  • magnetic pole strength — Electricity. a measure of the force exerted by one face of a magnet on a face of another magnet when both magnets are represented by equal and opposite poles. Symbol: m.
  • make one's flesh creep — to move slowly with the body close to the ground, as a reptile or an insect, or a person on hands and knees.
  • mcculloch-pitts neuron — (artificial intelligence)   The basic building block of artificial neural networks. It receives one or more inputs and produces one or more identical outputs, each of which is a simple non-linear function of the sum of the inputs to the neuron. The non-linear function is typically a threshhold or step function which is usually smoothed (i.e. a sigmoid) to facilitate learning.
  • microspectrophotometer — a spectrophotometer for examining light emitted, transmitted, or reflected by minute objects.
  • microspectrophotometry — a spectrophotometer for examining light emitted, transmitted, or reflected by minute objects.
  • microwave spectroscopy — the determination of those frequencies of the microwave spectrum that are selectively absorbed by certain materials, providing information about atomic, molecular, and crystalline structure.
  • miscellaneous expenses — small expenses of various kinds
  • motoring correspondent — a journalist who reviews and writes about cars
  • mozilla public license — Open source license
  • multiplicative inverse — reciprocal (def 9).
  • non-constructive proof — (logic)   (Or "existence proof") A proof that something exists that does not provide an example of that thing or a method for finding an example. (A constructive proof does provide such an example or method). For example, for any pair of finite real numbers n < 0 and p > 0 there exists a real number 0 < k < 1 such that f(k) = (1-k)*n + k*p = 0. A non-constructive proof might proceed by observing that as k changes continuously from 0 to 1, f(k) changes continuously from n to p and, since they lie either side of zero, f(k) must pass through zero for some intermediate value of k. This proof does not tell us what that value of k is, only that it exists.
  • nonspecific urethritis — nongonococcal urethritis.
  • nonspecular reflection — the diffuse reflection of sound or light waves
  • oak processionary moth — a moth, (Thaumetopoea processionea), of the family Thaumetopoeidae, the larvae of which leave the communal shelter nightly for food in a V-shaped procession
  • object-oriented pascal — Object Pascal
  • occupational therapist — professional who assists with rehabilitation
  • oceanic whitetip shark — whitetip shark (def 2).
  • open source definition — (standard)   (OSD) Definition of distribution terms for open source software, promoted by the Open Source Initiative.
  • open source initiative — (body)   (OSI) An organisation dedicated to managing and promoting the Open Source Definition for the good of the community.
  • operating instructions — instructions on how to use something (such an electrical appliance, etc)
  • oracle parallel server — (database)   (OPS) An Oracle configuration that allows for multiple Oracle servers running on seperate computers to access the same database files simultaneously. Normally used for high availability, running parallel servers can improve performance by spreading out CPU load, however, it requires data to be partitioned correctly. This feature is enabled with the Parallel Server Option (or "PSO").
  • out-of-pocket expenses — expenses which are unbudgeted and paid for in cash
  • outline specifications — preliminary specifications or plans on which later plans are based
  • paddle one's own canoe — any of various slender, open boats, tapering to a point at both ends, propelled by paddles or sometimes sails and traditionally formed of light framework covered with bark, skins, or canvas, or formed from a dug-out or burned-out log or logs, and now usually made of aluminum, fiberglass, etc.
  • padparadschah sapphire — a rare, yellowish-orange sapphire found in Sri Lanka.
  • paracoccidioidomycosis — a chronic infection caused by the fungus Paracoccidioides brasiliensis, occurring in Mexico and in Central and South America, characterized by mouth and throat ulcers, weight loss, and lesions on the skin, intestines, and genitals.
  • paranoid schizophrenia — severe psychiatric disorder
  • paroxysmal tachycardia — tachycardia that begins and subsides suddenly.
  • partnerships for peace — a subsidiary organization of NATO, comprising former Warsaw Pact countries that wish to be allied with NATO but have not been granted full NATO membership: established in 1994
  • pay dearly/cost dearly — If you pay dearly for doing something or if it costs you dearly, you suffer a lot as a result.
  • peanut-butter sandwich — a sandwich with a filling of peanut-butter
  • percussive maintenance — (jargon)   The fine art of whacking a device to get it working, possibly using a fine adjuster.
  • philosophical analysis — linguistic analysis.
  • phosphorus trichloride — a clear, colorless, fuming liquid, PCl 3 , used chiefly in organic synthesis as a chlorinating agent.
  • physiographic province — a geographic region in which climate and geology have given rise to an array of landforms different from those of surrounding regions.
  • pizza delivery service — a service whereby a pizza restaurant delivers pizzas to customers who order by telephone
  • planck's radiation law — the law that energy associated with electromagnetic radiation, as light, is composed of discrete quanta of energy, each quantum equal to Planck's constant times the corresponding frequency of the radiation: the fundamental law of quantum mechanics.
  • plastic pin grid array — (hardware, processor)   (PPGA) The package used for certain Intel Celeron processors. PPGA processors fit into Socket 370 motherboard sockets. The Plastic Pin Grid Array packaging is similar to that used on Pentium processors. The silicon core is covered by a heat slug that faces down toward the motherboard. The Celeron 300A to the 533 use a PPGA package. The Celeron 566 onward use a FC-PGA package. Celeron processors are also available in Slot 1 SEPP packaging.
  • play one's cards right — a usually rectangular piece of stiff paper, thin pasteboard, or plastic for various uses, as to write information on or printed as a means of identifying the holder: a 3″ × 5″ file card; a membership card.
  • pneumocystis pneumonia — a pulmonary infection caused by the protozoan Pneumocystis carinii, occurring as an opportunistic disease in persons with impaired immune systems, as AIDS victims. Abbreviation: PCP.
  • poor richard's almanac — an almanac (1732–58) written and published by Benjamin Franklin.
  • portuguese east africa — former name of Mozambique (def 1).
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