# heat death of the universe

> English word · Proper noun

## Definitions
1. A theoretical future state of the universe in which the universe attains thermodynamic equilibrium and a further increase of entropy is no longer possible.
2. The end of time; the end of a very long time.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/heat-death-of-the-universe