Meanings
- A major industrial process for smelting aluminium, by dissolving alumina in molten cryolite and then performing electrolysis.
Origin
Named after the American chemist Charles Martin Hall and the Frenchman Paul Héroult, who invented it independently in 1886.
Full word history & related roots →Cite this entry
Hall-Héroult process. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Hall-H%C3%A9roult%20process
“Hall-Héroult process.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Hall-H%C3%A9roult%20process. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “Hall-Héroult process,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Hall-H%C3%A9roult%20process.
Source: Hall-Héroult process on Wiktionary, CC BY-SA 4.0.