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Independent Treasury System

(Encyclopedia)Independent Treasury System, in U.S. history, system for the retaining of government funds in the Treasury and its subtreasuries independently of the national banking and financial systems. In one for...

horizon coordinate system

(Encyclopedia)horizon coordinate system: see altazimuth coordinate system. ...

free enterprise system

(Encyclopedia)free enterprise system: see capitalism. ...

Global Positioning System

(Encyclopedia)Global Positioning System: see navigation satellite. ...

galactic coordinate system

(Encyclopedia)galactic coordinate system, astronomical coordinate system in which the principal axis is the galactic equator (the intersection of the plane of the Milky Way with the celestial sphere) and the refere...

altazimuth coordinate system

(Encyclopedia)altazimuth coordinate system ăltăzˈəməth [key] or horizon coordinate system, astronomical coordinate system in which the position of a body on the celestial sphere is described relative to an obs...

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...

autonomic nervous system

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

life support system

(Encyclopedia)life support system: see artificial life support; Life Support for Human Spaceflight under space science. ...

parasympathetic nervous system

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