Skip to main content
fuel

fuel

1.0
A material burned to make energy for heat, light or engines
  • noun
  • /fjuːəl/
translation icon : combustible
  • With the lunar module almost out of fuel, Armstrong took manual control.
  • fossil fuel
  • burn fuel
  • fuel tank

Clothing, shelter, food, fuel, all those sorts of issues.

Autoplay Next

Examples

Synonyms

gasoline
vsfuel
  • US
318 1.6

A liquid people put in cars to make the engine run

is the general substance burned to produce energy for heating, lighting, or engines
natural gas
vsfuel
  • Specialized
140 2.7

A gas from underground that burns to make heat and electricity

is the broad substance consumed to produce energy across many uses
fossil fuel
vsfuel
125 3.3

A fuel like coal, oil, or natural gas made from ancient plants and animals

is the general substance burned or consumed to produce energy in many ways
propane
vsfuel
62 3.7

A gas that people use as a fuel for heating and cooking

is the general combustible substance burned or consumed to give energy
firewood
vsfuel
57 1.0

Pieces of wood used to make a fire for heat or cooking

is the wider term for any substance burned or consumed to produce energy
kerosene
vsfuel
41 3.8

A clear oil used as a fuel for lamps, heaters, and some engines

is the general substance used as energy source for heating or engines
petrol
vsfuel
  • UK
36 1.4

A liquid fuel that cars use in their engines

is the broader substance consumed to provide energy in heating or engines
nuclear fuel
vsfuel
  • Specialized
17 4.6

A material like uranium or plutonium used to make energy in a nuclear reactor

is the general substance consumed by burning or other reactions to make energy
jet fuel
vsfuel
  • Specialized
13 3.5

A liquid that planes burn in their engines to make them run

is the general substance burned or consumed to provide energy for engines
rocket fuel
vsfuel
  • Specialized
9 3.9

A substance you burn to move a rocket into space

is the broader category of energy sources used for heating, lighting, or engines
fuel oil
vsfuel
  • Specialized
5 3.5

A heavy oil that heats buildings and runs engines

is the general substance used for energy in heating, lighting, or engines
rocket propellant
vsfuel
  • Specialized
1 6.1

A material that burns or reacts to make a rocket move

is the general source of energy consumed to power engines or heating
combustible material
vsfuel
  • Specialized
1 4.1

A material that can catch fire and burn, like wood or paper

is the particular class of substances people burn to produce energy for use
fuelwood
vsfuel
3.7

Wood used to make fire for cooking or heating

is the general substance that people burn or consume to obtain energy

Idioms

7 5.9

To make a bad situation worse by saying or doing something that makes people angrier

like jet fuel
  • Informal
1 8.4

With very strong energy that makes someone act quickly

To make a bad situation worse by saying or doing something

Compounds

125 3.3

A fuel like coal, oil, or natural gas made from ancient plants and animals

fuel cell
  • Specialized
32 4.5

A device that makes electricity from hydrogen and oxygen

nuclear fuel
  • Specialized
17 4.6

A material like uranium or plutonium used to make energy in a nuclear reactor

fuel line
  • Specialized
15 3.1

A tube that carries fuel from a tank to an engine

diesel fuel
  • Specialized
14 2.8

A heavy oil used to power engines in vehicles and machines

jet fuel
  • Specialized
13 3.5

A liquid that planes burn in their engines to make them run

rocket fuel
  • Specialized
9 3.9

A substance you burn to move a rocket into space

fuel injection
  • Specialized
5 3.6

A system that sprays small drops of fuel directly into an engine's cylinders to help the engine run better

fuel oil
  • Specialized
5 3.5

A heavy oil that heats buildings and runs engines

fuel system
  • Specialized
4 3.6

A part of a car or plane that stores and gives fuel to the engine

4 2.9

A device that shows how much fuel is left in a car's tank

fuel filter
  • Specialized
3 3.4

A device in a fuel line that removes dirt and rust from fuel before it reaches the engine

fuel pod
  • Specialized
2 5.5

A removable container that attaches to a plane or spacecraft to hold extra fuel

1 3.0

The amount of fuel left in a tank

fuel-air explosive
  • Specialized
1 7.3

A weapon that sprays fuel into the air and then sets it on fire to make a very strong blast

fuel injection system
  • Specialized
1 4.1

A part of a car engine that sprays small drops of fuel into the cylinders

Amount of fuel a vehicle like a car uses for a certain distance or time

fuel-air bomb
  • Specialized
1 8.4

A bomb that spreads fuel into the air and then explodes to make a very large blast

combustion of fuel
  • Specialized
4.2

A process where fuel burns in air to make heat and light for energy

fuel for success
  • Informal
4.2

A thing that gives a person energy and drive to do well

A device that shows how much fuel is left in a car's tank

high-test fuel
  • Specialized
6.2

Fuel with a high octane rating for powerful car or plane engines

smoker fuel
  • Specialized
6.7

Natural material burned in a bee smoker to make smoke that calms bees

solid-fuel rocket
  • Specialized
5.3

An engine that burns solid fuel to push a vehicle into the sky

How Energy-Dense

hydrogen
  • Specialized
227 3.1
gasoline
  • US
318 1.6
fuel
1.0
to coal
  • Archaic
1 8.1
wood
613 1.0

Surface Forms

fuel singular
fuels plural

Etymology

The word fuel comes from an old word for the 'hearth' or 'fire' and is related to the root of focus. So fuel is the material that 'feeds' a fire and gives energy for heat, light, or engines.