22-letter words containing y, r
- endotrophic mycorrhiza — the most widespread and common type of mycorrhiza, in which the fungus lives within the cells of the roots of the plant
- entertainment industry — show business
- every now and then etc — You use every in the expressions every now and then, every now and again, every once in a while, and every so often in order to indicate that something happens occasionally.
- evolutionary algorithm — (EA) An algorithm which incorporates aspects of natural selection or survival of the fittest. An evolutionary algorithm maintains a population of structures (usually randomly generated initially), that evolves according to rules of selection, recombination, mutation and survival, referred to as genetic operators. A shared "environment" determines the fitness or performance of each individual in the population. The fittest individuals are more likely to be selected for reproduction (retention or duplication), while recombination and mutation modify those individuals, yielding potentially superior ones. EAs are one kind of evolutionary computation and differ from genetic algorithms. A GA generates each individual from some encoded form known as a "chromosome" and it is these which are combined or mutated to breed new individuals. EAs are useful for optimisation when other techniques such as gradient descent or direct, analytical discovery are not possible. Combinatoric and real-valued function optimisation in which the optimisation surface or fitness landscape is "rugged", possessing many locally optimal solutions, are well suited for evolutionary algorithms.
- fall prey to something — To fall prey to something bad means to be taken over or affected by it.
- federal reserve system — a U.S. federal banking system that is under the control of a central board of governors (Federal Reserve Board) with a central bank (Federal Reserve Bank) in each of 12 districts and that has wide powers in controlling credit and the flow of money as well as in performing other functions, as regulating and supervising its member banks.
- fetal alcohol syndrome — a pattern of birth defects caused by maternal consumption of alcohol during pregnancy: considered as one of the fetal alcohol spectrum disorders. Abbreviation: FAS.
- fifth earl of rosebery — Archibald Philip Primrose [prim-rohz] /ˈprɪmˌroʊz/ (Show IPA), 5th Earl of, 1847–1929, British statesman and author: prime minister 1894–95.
- four-hundred-day clock — a clock that needs to be wound once a year, having the works exposed under a glass dome and utilizing a torsion pendulum.
- frequency distribution — the correspondence of a set of frequencies with the set of categories, intervals, or values into which a population is classified.
- frequency shift keying — (communications) (FSK) The use of frequency modulation to transmit digital data, i.e. two different carrier frequencies are used to represent zero and one. FSK was originally used to transmit teleprinter messages by radio (RTTY) but can be used for most other types of radio and land-line digital telegraphy. More than two frequencies can be used to increase transmission rates.
- frictional electricity — static electricity generated by friction
- genitourinary medicine — the branch of medical science concerned with the study and treatment of diseases of the genital and urinary organs, esp sexually transmitted diseases
- get a word in edgeways — to succeed in interrupting a conversation in which someone else is talking incessantly
- glossopharyngeal nerve — either of the ninth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the pharynx, the soft palate, and the parotid glands, and of sensory fibers that conduct impulses to the brain from the pharynx, the middle ear, and the posterior third of the tongue.
- go their separate ways — When two or more people who have been together for some time go their separate ways, they go to different places or end their relationship.
- grand duchy of muscovy — Muscovy (def 1).
- graph rewriting system — An extension of a term rewriting system which uses graph reduction on terms represented by directed graphs to avoid duplication of work by sharing expressions.
- graphical display unit — an output device incorporating a cathode ray tube on which both line drawings and text can be displayed. It is usually used in conjunction with a light pen to input or reposition data
- greystone technologies — (company) The producers of the GT/M MUMPS compiler and GT/SQL pre-processor for VAX and DEC Alpha.
- group of seventy-seven — the developing countries of the world
- have other fish to fry — have sth else to do
- heart is in your mouth — If your heart is in your mouth, you feel very excited, worried, or frightened.
- here's mud in your eye — a humorous drinking toast
- hermann-mauguin symbol — a notation for indicating a particular point group.
- hexahydroxycyclohexane — inositol.
- hexamethylenetetramine — a white, crystalline, water-soluble powder, C 6 H 12 N 4 , used as a vulcanization accelerator, an absorbent in gas masks, in the manufacture of the explosive RDX and synthetic resins, and in medicine as a diuretic and urinary antiseptic.
- highway contract route — a route for carrying mail over the highway between designated points, given on contract to a private carrier and often requiring, in rural areas, delivery to home mailboxes. Abbreviation: HCR.
- hybrid multiprocessing — (parallel) (HMP) The kind of multitasking which OS/2 supports. HMP provides some elements of symmetric multiprocessing, using add-on IBM software called MP/2. OS/2 SMP was planned for release in late 1993.
- hydrocinnamic aldehyde — a colorless liquid, C 9 H 10 O, having a floral odor, used in perfumery and flavoring.
- hydrogen embrittlement — the weakening of metal by the sorption of hydrogen during a pickling process, such as that used in plating
- in all one's born days — so far in one's life
- in one's birthday suit — naked; nude
- in one's own back yard — close at hand
- in your wildest dreams — If you say that you could not imagine a particular thing in your wildest dreams, you are emphasizing that you think it is extremely strange or unlikely.
- industrial archaeology — the study of past industrial machines, works, etc
- industrialized country — a country characterized by industry on an extensive scale
- information technology — the development, implementation, and maintenance of computer hardware and software systems to organize and communicate information electronically. Abbreviation: IT.
- intermediate frequency — the middle frequency in a superheterodyne receiver, at which most of the amplification takes place. Abbreviation: if.
- java community process — (project) (JCP) An organization controlled by Sun Microsystems to further the growth of the Java language and runtime. The JCP produces standards called Java Standard Requests, which are "requests" in the same sense as RFCs.
- justification by works — the belief that a person becomes just before God by the performance of good works: the doctrine against which Luther protested in inaugurating the Protestant Reformation.
- katharine meyer graham — Katharine Meyer, 1917–2001, U.S. newspaper publisher.
- ketamine hydrochloride — a powerful anesthetic, C13H16ClNO·HCl, used in surgery
- kill yourself laughing — If you say that you killed yourself laughing, you are emphasizing that you laughed a lot because you thought something was extremely funny.
- kinetic theory of heat — a theory that the temperature of a body is determined by the average kinetic energy of its particles and that an inflow of heat increases this energy.
- klinefelter's syndrome — an abnormal condition in which at least one extra X chromosome is present in a male: characterized by reduced or absent sperm production, small testicles, and in some cases enlarged breasts.
- lady's not for burning — a verse play (1948) by Christopher Fry.
- law enforcement agency — an organization responsible for enforcing the law, such as a police or sheriff department
- liberal democrat party — The Liberal Democrat Party is the third largest political party in Britain and the main centre party. It believes in improving the constitution and the voting system and in providing good welfare services.
- 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.