Added 7 October 2026
fuel
/ˈfjuːəl/ noun
Latin root: focus Wiktionary
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about fuel at Wordnik → Where our words come from →
- Substance consumed to provide energy through combustion, or through chemical or nuclear reaction.
- Substance that provides nourishment for a living organism; food.
-
Something that stimulates, encourages or maintains an action.
His books were fuel for the revolution.
verb
Origin
From Middle English fuayle, from Old French fouaille, feuaille (“firewood, kindling”), from feu (“fire”), from Late Latin focus (“fire”), from Latin focus (“hearth”), whence English focus. Cognate with Spanish fuego (“fire”), and Portuguese fogo (“fire”).
From Wiktionary, via Kaikki.org (CC BY-SA)