# Rule 30

> English word · Proper noun

## Definitions
1. A one-dimensional binary cellular automaton rule displaying aperiodic, chaotic behaviour.

## Etymology
So named because 30 is the smallest Wolfram code that describes its rule set.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/rule-30