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heat death

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noun Thermodynamics.

See under entropy (def. 3).

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Origin of heat death

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for heat death

heat death

noun

thermodynamics the condition of any closed system when its total entropy is a maximum and it has no available energy. If the universe is a closed system, it should eventually reach this state
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for heat death

heat death

The eventual dispersion of all of the energy within a physical system to a completely uniform distribution of heat energy, that is, to maximum entropy. Heat death for all macroscopic physical systems, including the universe, is predicted by the Second Law of Thermodynamics. See more at entropy thermodynamics.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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