# Heegaard decomposition

> English word · Noun

## Definitions
1. The decomposition of a 3-manifold as two handlebodies unioned along their boundaries.

## Etymology
Named after Poul Heegaard, Danish mathematician.

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