closed system

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noun Thermodynamics.

a region that is isolated from its surroundings by a boundary that admits no transfer of matter or energy across it.

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His boss, whom he admires, is waiting to meet with him about the big project.

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Compare open system.

Origin of closed system

First recorded in 1895–1900

Words nearby closed system

closed shell, closed shop, closed source, closed-stack, closed stance, closed system, closed traverse, closed union, closed universe, closefisted, close-fitting

How to use closed system in a sentence

In all other cases, you have to take your data and get that ingested into an external system, especially a closed system.
Unified ID 2.0 quietly amasses more support from the agency world, but publishers aren’t as convinced|Michael Bürgi|August 10, 2021|Digiday
A closed system prevents milk from coming into contact with the pump, making this model simpler to sterilize.
The best breast pump for comfortable, effective pumping wherever you are|Billy Cadden|July 26, 2021|Popular-Science
Studies suggest that changing the primary system from a closed system, where only party registrants can vote, to an open primary or a top-two primary doesn’t really alter the makeup of the primary electorate.
Changing How Primaries Work Probably Won’t Make Politics Less Divisive|Geoffrey Skelley (geoffrey.skelley@abc.com)|July 19, 2021|FiveThirtyEight
They don’t want a closed system, such as the Super League, in which teams compete risk-free.
Soccer teams are owned by the rich. But as Super League shows, fans carry the game’s soul.|Steven Goff|April 21, 2021|Washington Post

At present, we can’t know because policing and police leadership are closed systems.
We’re Asking the Wrong Question About Police Chief Candidates|Roddrick Colvin|April 14, 2021|Voice of San Diego
To buy an Apple product is to bet on the longevity of the closed system to which we've committed ourselves.
Apple’s Army of Whiners|Douglas Rushkoff|June 22, 2009|DAILY BEAST
For by definition they form a closed system; to introduce reference to a future event is to deny the definition.
Essays in Experimental Logic|John Dewey
Vascular system generally present forming a closed system of tubes.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7|Various
Vascular system always present, forming a closed system, more complicated in the larger forms than in the aquatic genera.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7|Various
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.
The Idea of Progress|J. B. Bury

Scientific definitions for closed system

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.