heat death

heat death
: an ultimate state of thermal equilibrium implying conditions of maximum entropy and zero available energy that according to the laws of thermodynamics the material universe is apparently approaching

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See under entropy (def. 3).

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heat death noun
The final state of the universe (if it is a closed system) predicted by the Second Law of Thermodynamics, in which heat and energy are uniformly distributed throughout the substance of the universe
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Main Entry:heat

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n. Physics a state of uniform distribution of energy, esp. viewed as a possible fate of the universe. It is a corollary of the second law of thermodynamics

Useful english dictionary. 2012.

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