# Hall-Héroult process

> English word · Proper noun

## Definitions
1. A major industrial process for smelting aluminium, by dissolving alumina in molten cryolite and then performing electrolysis.

## Etymology
Named after the American chemist Charles Martin Hall and the Frenchman Paul Héroult, who invented it independently in 1886.

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