closed system

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closed system

A system in which the specifications are kept secret to prevent interference from third parties. It inhibits third-party software from being installed; it keeps third-party hardware from interoperating with it, and it prevents third-party enhancements from improving the product. Contrast with open system. See proprietary standards.

closed system [¦klōzd ′sis·təm]

(engineering)

A system for water handling that does not permit air to enter.

(thermodynamics)

A system which is isolated so that it cannot exchange matter or energy with its surroundings and can therefore attain a state of thermodynamic equilibrium. Also known as isolated system.

closed system

A heating or refrigeration piping system in which the circulating water or brine is completely enclosed and under pressure above atmospheric.

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No references found			The earth is not a perfect closed system, but for the purpose of your argument, it is a closed system. Mass of ideas.. by Gulf Daily News (Manama, Bahrain) It is a closed system, yet now someone wants to pay outside auditors pounds 200,000 of our money to find out if there is a fault in the internal systems of the health service. pounds 200,000 hospital audit simply not on; Letters by Coventry Evening Telegraph (England) The closed system reduces risk of cross contamination and the lockable end cap prevents inadvertent suctioning. New Closed Suction System by FOCUS: Journal for Respiratory Care & Sleep Medicine			closed reduction closed region closed respiratory gas system closed rotative gas lift closed sea closed set Closed Sets closed shaft closed sheathing closed sheeting closed shell closed shelving Closed Shop closed shop and open shop closed source closed specifications closed stair closed stair string closed standard closed steam closed string closed string stair closed stringer closed subroutine closed surface closed system closed term closed trapped surface closed triangular region closed universe closed valley closed water piping system closed-belt conveyor closed-box system closed-box testing closed-bus system closed-caption television closed-cell foam closed-circuit communications system closed-circuit grinder closed-circuit grouting closed-circuit pulverizing closed-circuit signaling closed-circuit telegraph system closed-circuit telephone closed-circuit television Closed-Circuit Television System closed-circuit TV surveillance system closed-coil armature closed-cycle fuel cell closed-cycle reactor			Closed shops Closed shops Closed Side Setting Closed Skill Sport Closed Society Closed Society Closed software Closed source Closed source movement Closed source software Closed source software closed specifications closed stair closed stair string closed standard closed standards closed steam Closed string closed string stair closed stringer Closed subgroup Closed subgroup closed subroutine Closed Subscriber Group Closed subset Closed subset Closed surface closed surgery Closed syllable Closed syllable closed system Closed System Respirator Evaluator Closed System Step Etching Closed talik Closed term Closed Throttle Position Closed Time Path Green Function Closed timelike curve Closed Top Open Front closed trapped surface closed triangular region Closed unbounded operator Closed unit ball closed universe closed universe Closed User Group Closed User Group Validation and Selection Request closed valley Closed Vertical Subcondylar Osteotomy closed water piping system Closed waveguide Closed waveguide Closed Without Action Closed world assumption Closed World Machine Closed Year Closed, Non-Collectable

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