- The definition of fuel is anything that produces energy, power or heat.
- An example of fuel is carbohydrates.
- An example of fuel is gasoline.
- An example of fuel is solar.
- Fuel is defined as to give energy or power.
An example of fuel is putting gas in your car.
Wood fuels this fire.
fuel definition by Webster's New World
- any material, as coal, oil, gas, wood, etc., burned to supply heat or power
- fissile material from which nuclear energy can be obtained, as in a nuclear reactor
- anything that maintains or intensifies strong feeling, etc.
Origin of fuelMiddle English fewell ; from Old French fouaille ; from Medieval Latin fuale, focale ; from foca, hearth, for Classical Latin focus, fireplace: see focus
fuel definition by American Heritage Dictionary
- Something consumed to produce energy, especially:a. A material such as wood, coal, gas, or oil burned to produce heat or power.b. Fissionable material used in a nuclear reactor.c. Nutritive material metabolized by a living organism; food.
- Something that maintains or stimulates an activity or emotion: “Money is the fuel of a volunteer organization” (Natalie de Combray).
verbfu·eled, fu·el·ing, fu·els also fu·elled or fu·el·ling
- To provide with fuel.
- To support or stimulate the activity or existence of: rhetoric that fueled the dissenters.
Origin of fuelMiddle English feuel, from Old French fouaille, feuaile, from Vulgar Latin *focālia, neuter pl. of *focālis, of the hearth or fireplace, from Latin focus, hearth, fireplace.
fuel definition by Wiktionary
- Substance consumed to provide energy through combustion, or through chemical or nuclear reaction.
- Substance that provides nourishment for a living organism; food.
- (figuratively) Something that stimulates, encourages or maintains an action.
- His books were fuel for the revolution. Money is the fuel for economy.
(third-person singular simple present fuels, present participle fueling, simple past and past participle fueled) fuel (third-person singular simple present fuels, present participle fuelling, simple past and past participle fuelled)
- to provide fuel
- to exacerbate, to cause to grow or become greater
- fuelled and fuelling are mainly Australian, New Zealand, and British spellings.
- fueled and fueling are mainly US spellings.