fuel

American  

[fyoo-uhl] / ˈfyu əl /

noun

1. combustible matter used to maintain fire, as coal, wood, oil, or gas, in order to create heat or power.

2. something that gives nourishment; food.

3. an energy source for engines, power plants, or reactors.

   Kerosene is used as jet engine fuel.

4. something that sustains or encourages; stimulant.

   Our discussion provided him with fuel for debate.

   Synonyms:

   stimulus, impetus, sustenance, ammunition

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verb (used with object)

fueled, fueling, fuelled, fuelling

1. to supply with fuel.

verb (used without object)

fueled, fueling, fuelled, fuelling

1. to obtain or replenish fuel.

fuel British  

/ fjʊəl /

noun

1. any substance burned as a source of heat or power, such as coal or petrol

2. 1. the material, containing a fissile substance, such as uranium-235, that produces energy in a nuclear reactor

   2. a substance that releases energy in a fusion reactor

3. something that nourishes or builds up emotion, action, etc

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verb

1. to supply with or receive fuel

fuel Scientific  

/ fyo̅o̅′əl /

1. A substance that produces useful energy when it undergoes a chemical or nuclear reaction. Fuel such as coal, wood, oil, or gas provides energy when burned. Compounds in the body such as glucose are broken down into simpler compounds to provide energy for metabolic processes. Some radioactive substances, such as plutonium and tritium, provide energy by undergoing nuclear fission or fusion.

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fuel Idioms  

1. see add fuel to the fire.

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Other Word Forms

• defuel verb (used with object)
• fueler noun
• fueller noun
• nonfuel adjective
• unfueled adjective
• well-fueled adjective

Etymology

Origin of fuel

First recorded in 1300–50; Middle English feuel, fuel(le), from Old French feuaile, from Vulgar Latin focālia (unrecorded), neuter plural of focālis (unrecorded) “of the hearth, fuel,” from Latin focus “hearth” ( focus ) + -ālis -al ¹

Example Sentences

These measures are intended to save fuel in order to promote "food and electricity production" and enable "the preservation of fundamental activities that generate foreign currency," said Perez-Oliva Fraga.

From Barron's

Warsh built his reputation as a hawk by warning for years that easy money would fuel inflation.

From The Wall Street Journal

These are pieces of carbon and other chemicals, like a miniature lump of coal, that come from the incomplete burning of fuel.

From BBC

During Friday’s negotiations in Oman, Iran refused to end enrichment of nuclear fuel or move it offshore, the Journal reports.

From The Wall Street Journal

Industrial mainstay Caterpillar’s run-up is now fueled by data centers’ power demands, while IBM is increasingly focused on AI.

From The Wall Street Journal

Related Words

• ammunition
• electricity
• food
• gas
• material