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respiratory system
(Encyclopedia)respiratory system: see respiration. ...Ptolemaic system
(Encyclopedia)Ptolemaic system tŏlˌəmāˈĭk [key], historically the most influential of the geocentric cosmological theories, i.e., theories that placed the earth motionless at the center of the universe with a...nervous system
(Encyclopedia)CE5 Nerve cell CE5 Nervous system nervous system, network of specialized tissue that controls actions and reactions of the body and its adjustment to the environment. Virtually all members of ...spoils system
(Encyclopedia)spoils system, in U.S. history, the practice of giving appointive offices to loyal members of the party in power. The name supposedly derived from a speech by Senator William Learned Marcy in which he...steering system
(Encyclopedia)steering system, in automobiles, steering wheel, gears, linkages, and other components used to control the direction of a vehicle's motion. Because of friction between the front tires and the road, es...sweating system
(Encyclopedia)sweating system, method of exploiting labor by supplying materials to workers and paying by the piece (see piecework) for work done on those materials in the workers' homes or in small workshops (swea...borstal system
(Encyclopedia)borstal system bôrˈstəl [key], rehabilitation method formerly used in Great Britain for delinquent boys aged 16 to 21. The idea originated (1895) with the Gladstone Committee as an attempt to refor...bicameral system
(Encyclopedia)bicameral system bīkămˈərəl [key], governmental system dividing the legislative function between two chambers, an “upper,” such as the U.S. Senate and the British House of Lords, and a “low...binary system
(Encyclopedia)binary system, numeration system based on powers of 2, in contrast to the familiar decimal system, which is based on powers of 10. In the binary system, only the digits 0 and 1 are used. Thus, the fir...cgs system
(Encyclopedia)cgs system, system of units of measurement based on the metric system and having the centimeter of length, the gram of mass, and the second of time as its fundamental units. Other cgs units are the dy...Browse by Subject
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