Try Our Apps


Pore Over vs. Pour Over


[fyoo-uh l] /ˈfyu əl/
combustible matter used to maintain fire, as coal, wood, oil, or gas, in order to create heat or power.
something that gives nourishment; food.
an energy source for engines, power plants, or reactors:
Kerosene is used as jet engine fuel.
something that sustains or encourages; stimulant:
Our discussion provided him with fuel for debate.
verb (used with object), fueled, fueling or (especially British) fuelled, fuelling.
to supply with fuel.
verb (used without object), fueled, fueling or (especially British) fuelled, fuelling.
to obtain or replenish fuel.
Origin of fuel
1300-50; Middle English fuel(le), feuel < Old French feuaile < Vulgar Latin *focālia, neuter plural of *focālis of the hearth, fuel. See focus, -al1
Related forms
fueler; (especially British) fueller, noun
defuel, verb (used with object), defueled, defueling or (especially British) defuelled, defuelling.
nonfuel, adjective
unfueled; (especially British) unfuelled, adjective
well-fueled; (especially British) well-fuelled, adjective
4. ammunition, sustenance, impetus, stimulus. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for fuel
Contemporary Examples
Historical Examples
  • There was no fear of their running short in the staple article of fuel.

    The Ocean Waifs Mayne Reid
  • Yates gathered some fuel, and managed to coax the dying embers into a blaze.

  • Some of the hills are covered with dwarf shrubs, which may be used as fuel.

  • Every once in a while women threw armfuls of fuel on the blaze.

    The Leopard Woman Stewart Edward White
  • It is extensively cut for fuel, and it burns about like eastern white oak, but leaves more ashes.

    American Forest Trees Henry H. Gibson
British Dictionary definitions for fuel


any substance burned as a source of heat or power, such as coal or petrol
  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
something that nourishes or builds up emotion, action, etc
verb fuels, fuelling, fuelled (US) fuels, fueling, fueled
to supply with or receive fuel
Derived Forms
fueller, (US) fueler, noun
Word Origin
C14: from Old French feuaile, from feu fire, ultimately from Latin focus fireplace, hearth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for fuel

early 14c., from Old French foaile "bundle of firewood," from Vulgar Latin legal term *focalia "right to demand material for making fire," neuter plural of Latin focalis "pertaining to a hearth," from focus "hearth" (see focus). Figurative use from 1570s.


1590s, from fuel (n.). Related: Fueled; fueling.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
fuel in Science
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
fuel in the Bible

Almost every kind of combustible matter was used for fuel, such as the withered stalks of herbs (Matt. 6:30), thorns (Ps. 58:9; Eccl. 7:6), animal excrements (Ezek. 4:12-15; 15:4, 6; 21:32). Wood or charcoal is much used still in all the towns of Syria and Egypt. It is largely brought from the region of Hebron to Jerusalem. (See COAL.)

Easton's 1897 Bible Dictionary
Cite This Source
Idioms and Phrases with fuel
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for fuel

All English speakers likely know this word

Word Value for fuel

Scrabble Words With Friends

Nearby words for fuel