closed system

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:
1895–1900
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Closed system is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
the offspring of a zebra and a donkey.
Dictionary.com's 21st Century Lexicon
Main Entry:  closed system
Part of Speech:  n
Definition:  a complete and seemingly unchangeable set of doctrines, ideas, or things; a self-contained system that is unaffected by outside influences
Dictionary.com's 21st Century Lexicon
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American Heritage
Science Dictionary
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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