Definition of 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
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up heat death? Please tell us where you read or heard it (including the quote, if possible).