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  • 161systems engineering — ☆ systems engineering n. a branch of engineering using esp. information theory, computer science, and facts from systems analysis studies to design integrated operational systems for specific complexes systems engineer n. * * * Technique of using …

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  • 162chemoreception — chemoreceptive /kee moh ri sep tiv, kem oh /, adj. /kee moh ri sep sheuhn, kem oh /, n. the physiological response to chemical stimuli. [1915 20; CHEMO + RECEPTION] * * * Sensory process by which organisms respond to external chemical stimuli, by …

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  • 163colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …

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  • 164motion picture — motion picture, adj. 1. a sequence of consecutive pictures of objects photographed in motion by a specially designed camera (motion picture camera) and thrown on a screen by a projector (motion picture projector) in such rapid succession as to… …

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  • 165radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …

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  • 166rite of passage — 1. Anthropol. a ceremony performed to facilitate or mark a person s change of status upon any of several highly important occasions, as at the onset of puberty or upon entry into marriage or into a clan. 2. any important act or event that serves… …

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  • 167sacrifice — sacrificeable, adj. sacrificer, n. /sak reuh fuys /, n., v., sacrificed, sacrificing. n. 1. the offering of animal, plant, or human life or of some material possession to a deity, as in propitiation or homage. 2. the person, animal, or thing so… …

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  • 168sports — /spawrts, spohrts/, adj. 1. of or pertaining to a sport or sports, esp. of the open air or athletic kind: a sports festival. 2. (of garments, equipment, etc.) suitable for use in open air sports, or for outdoor or informal use. [1910 15; SPORT +… …

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  • 169Wang Xiaotong — flourished early 7th century Chinese mathematician who made important advances in the solution of problems involving cubic equations. In 626 he took part in the revision of the Wuying calendar (618), which had erroneously predicted eclipses in… …

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  • 170mental disorder — Any illness with a psychological origin, manifested either in symptoms of emotional distress or in abnormal behaviour. Most mental disorders can be broadly classified as either psychoses or neuroses (see neurosis; psychosis). Psychoses (e.g.,… …

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  • 171metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …

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  • 172animal disease — ▪ non human Introduction       an impairment of the normal state of an animal that interrupts or modifies its vital functions.       Concern with diseases that afflict animals dates from the earliest human contacts with animals and is reflected… …

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  • 173animal learning — ▪ zoology Introduction       the alternation of behaviour as a result of individual experience. When an organism can perceive and change its behaviour, it is said to learn.       That animals can learn seems to go without saying. The cat that… …

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  • 174childhood disease and disorder — Introduction       any illness, impairment, or abnormal condition that affects primarily infants and children i.e., those in the age span that begins with the fetus and extends through adolescence.       Childhood is a period typified by change,… …

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  • 175oxidation–reduction reaction — ▪ chemical reaction Introduction also called  redox reaction        any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes. Many oxidation– reduction… …

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  • 176political system — Introduction       the set of formal legal institutions that constitute a “government” or a “ state.” This is the definition adopted by many studies of the legal or constitutional arrangements of advanced political orders. More broadly defined,… …

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  • 177Sex positions — are positions which people may adopt during or for the purpose of sexual intercourse or other sexual activities. Sexual acts are generally described by the positions the participants adopt in order to perform those acts. Though sexual intercourse …

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  • 178Department of the Air Force Police — U.S. Air Force Civilian Police Patch The United States Air Force Police are the civilian uniformed police service of the United States Air Force, responsible for the Force Protection of assets and all aspects of Law Enforcement on Air Force… …

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  • 179Roman Catholic devotions — For devotions in the Eastern Catholic Churches, refer to the articles on the individual Churches or the corresponding Orthodox Churches. Over 100 million Catholics follow the devotion to Divine Mercy[1] …

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  • 180Memory errors — Memory gaps and errors refer to the incorrect recall, or complete loss, of information in the memory system for a specific detail and/or event. Memory errors may include remembering events that never occurred, or remembering them differently from …

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