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Definition of Closed system

Closed system Definition from Business & Finance Dictionaries & Glossaries
Glossary of petroleum Industry
a water-handling system that air is not allowed to enter to prevent corrosion or scale (such as a saltwater-disposal system).
Glossary of papermaking terms
The system of operating a paper or board making machine whereby the water drained from the sheet during formation is collected and returned for re-use Instead of being discharged to waste.
Closed system Definition from Science & Technology Dictionaries & Glossaries
Web Dictionary of Cybernetics and Systems
an isolated system having no interaction with an environment. (Von Bertalanffy, p.3)
a system whose BEHAVlor is entirely explainable from within, a system without input. Systems may be variously closed to matter/ENERGY, to information, and/or to organization . Systems closed to energy are autark, systems closed to information are independent , and systems closed to organization are autonomous (see autonomy ). Biological organisms are largely closed to organization, the latter being specified by the dna at the point of inception. The output has nothing to do with whether a system is closed. Systems without output are non-knowable through observation from the outside (see open system ). (Krippendorff )
Closed system Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
The term closed system refers to a physical system that is closed to certain types of transfers in or out of the system. The specification of what types of transfers are excluded, is different in different contexts.

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Closed system Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
a system that functions without any materials or processes beyond those it contains and/or produces itself.