# Siegel disc

> English word · Noun

## Definitions
1. A connected component in the Fatou set where the dynamics is analytically conjugate to an irrational rotation.

## Etymology
Named in honor of Carl Ludwig Siegel.

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