heat death

noun

: 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

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now