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equatorial coordinate system
(Encyclopedia)CE5 Equatorial coordinate system equatorial coordinate system, the most commonly used astronomical coordinate system for indicating the positions of stars or other celestial objects on the celesti...National Forest System
(Encyclopedia)National Forest System, federally owned reserves, c.191 million acres (77.4 million hectares), administered by the Forest Service of the U.S. Dept. of Agriculture. The system is made up of 155 nationa...life support system
(Encyclopedia)life support system: see artificial life support; Life Support for Human Spaceflight under space science. ...pitot static system
(Encyclopedia)pitot static system pētōˈ [key], device for measuring the rate at which a fluid flows. Among the principal applications of the device are an airspeed indicator for aircraft and a distance and speed...Space Transportation System
(Encyclopedia)Space Transportation System, official designation for the U.S. space shuttle. ...transdermal delivery system
(Encyclopedia)transdermal delivery system: see skin patch. ...ring, mathematical system
(Encyclopedia)ring, in mathematics, system consisting of a set R of elements and two binary operations, such that addition makes R a commutative group and multiplication is associative and distributes over addition...Horsley, Sir Victor Alexander Haden
(Encyclopedia)Horsley, Sir Victor Alexander Haden, 1857–1916, English surgeon and neurologist. A specialist in surgery of the endocrine glands and the nervous system, he devised a noted operation for spinal-cord ...enkephalin
(Encyclopedia)enkephalin ĕnkĕfˈəlĭn [key], one of several naturally occurring morphinelike substances (endorphins) released from nerve endings of the central nervous system and the adrenal medulla. They act as...Gaucher's disease
(Encyclopedia)Gaucher's disease gōshāzˈ [key], rare genetic disease involving a deficiency of an enzyme, glucocerebrosidase, which normally breaks down certain body glycolipids (i.e., lipids (fats) that have a s...Browse by Subject
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