Entropy

usgb/ˈentrəpi/
noun

A measure of the amount of disorder in a system.

In an isolated system, the entropy can only increase over time.
Visual representation of "entropy" - A measure of the amount of disorder in a system

Often appears as...

  • increase in entropy
  • entropy of system

Usage tips

Formal

Technical

Definition 1 of 3
Visual representation of "entropy"
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Isolated Systems

Entropy increases in isolated systems where energy isn't added or lost.

Illustration for Isolated Systems
The universe is the ultimate isolated system, with entropy always increasing.
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Not Reversibility

High entropy means a system isn't easily returned to its prior state.

Illustration for Not Reversibility
Melting ice cubes show increasing entropy as they won't reform without energy.
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Order to Disorder

Entropy shows a system's transition from order to disorder.

Illustration for Order to Disorder
A neat room becomes disordered over time, demonstrating entropy.
Visual representation of the word "Entropy"

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