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closed system

noun, Thermodynamics.
a region that is isolated from its surroundings by a boundary that admits no transfer of matter or energy across it.
Compare open system.
Origin of closed system
First recorded in 1895-1900 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for closed system
Contemporary Examples
Historical Examples
  • The complex of ideas becomes a closed system, a world in and of itself.

    The Behavior of Crowds Everett Dean Martin
  • The development of man is a closed system; its term is known and is within reach.

  • In these there is a closed system of vessels, not communicating with the body-cavity, and containing a coloured fluid.

  • In the second place, it is not a closed system; room remains for an indefinite development in the future.

  • As with Hegel, the future is ignored, progress is confined within a closed system, the highest circle has already been reached.

  • But it interests us to observe that his synthesis of human Progress is, like Hegel's, what I have called a closed system.

  • It seems to be a closed system with no connection with the rest of the body except the restraining membrane.

    Tabby Winston Marks
  • For by definition they form a closed system; to introduce reference to a future event is to deny the definition.

  • Vascular system generally present forming a closed system of tubes.

Contemporary definitions for closed system

a complete and seemingly unchangeable set of doctrines, ideas, or things; a self-contained system that is unaffected by outside influences's 21st Century Lexicon
Copyright © 2003-2014, LLC
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closed system in Science
closed system  
A physical system that does not interact with other systems. A closed system obeys the conservation laws in its physical description. Also called isolated system. Compare open system.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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