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parasympathetic nervous system

(Encyclopedia)parasympathetic nervous system: see nervous system. ...

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...

central nervous system

(Encyclopedia)central nervous system: see nervous system. ...

sympathetic nervous system

(Encyclopedia)sympathetic nervous system: see nervous system. ...

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...

peripheral nervous system

(Encyclopedia)peripheral nervous system: see nervous system. ...

Hazard, Ebenezer

(Encyclopedia)Hazard, Ebenezer, 1744–1817, American public official and historian, b. Philadelphia. He became a publisher in New York City. He was appointed (1775) first postmaster of the city under the Continent...