- 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: Middle English fewell ; from Old French fouaille ; from Midieval 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).
- To provide with fuel.
- To support or stimulate the activity or existence of: rhetoric that fueled the dissenters.
Origin: Middle 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.
- fuˈel·er noun
fuel - Phrases/Idioms
fuel - Science Definition