entropy

/ˈɛntɹəpi/ · noun

Meaning

Strictly thermodynamic entropy. A measure of the amount of energy in a physical system that cannot be used to do work.
A measure of the disorder present in a system.
The capacity factor for thermal energy that is hidden with respect to temperature http//arxiv.org/pdf/physics/0004055.
The dispersal of energy; how much energy is spread out in a process, or how widely spread out it becomes, at a specific temperature. https//web.archive.org/web/20060702234316/http://www.entropysite.com/students_approach.html
A measure of the amount of information and noise present in a signal.
The tendency of a system that is left to itself to descend into chaos.

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