entropy

noun
en*tro*py \ ˈen-trə-pē \
1867{ds||1||}
  • a measure of the unavailable energy in a closed thermodynamic system that is also usually considered to be a measure of the system's disorder, that is a property of the system's state, and that varies directly with any reversible change in heat in the system and inversely with the temperature of the system; broadly : the degree of disorder or uncertainty in a system
  • the degradation of the matter and energy in the universe to an ultimate state of inert uniformity
  • a process of degradation or running down or a trend to disorder
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