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fuel

fuel

∞ 1.0
A material burned to make energy for heat, light or engines
  • noun
  • /fjuːəl/
: 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.

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Examples

Synonyms

natural gas
vsfuel
  • Specialized
197 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
129 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
gasoline
vsfuel
  • US
89 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
propane
vsfuel
59 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
54 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
36 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
35 1.4

A liquid fuel that cars use in their engines

is the broader substance consumed to provide energy in heating or engines
jet fuel
vsfuel
  • Specialized
19 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
nuclear fuel
vsfuel
  • Specialized
18 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
fuel oil
vsfuel
  • Specialized
12 3.5

A heavy oil that heats buildings and runs engines

is the general substance used for energy in heating, lighting, or engines
rocket fuel
vsfuel
  • Specialized
12 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
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
1 3.7

Wood used to make fire for cooking or heating

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

Idioms

6 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

1 7.3

To make a bad situation worse by saying or doing something

Compounds

129 3.3

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

fuel cell
  • Specialized
41 4.5

A device that makes electricity from hydrogen and oxygen

jet fuel
  • Specialized
19 3.5

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

nuclear fuel
  • Specialized
18 4.6

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

diesel fuel
  • Specialized
17 2.8

A heavy oil used to power engines in vehicles and machines

fuel line
  • Specialized
17 3.1

A tube that carries fuel from a tank to an engine

fuel oil
  • Specialized
12 3.5

A heavy oil that heats buildings and runs engines

rocket fuel
  • Specialized
12 3.9

A substance you burn to move a rocket into space

fuel system
  • Specialized
7 3.6

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

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

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

2 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

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
1 4.2

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

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

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

solid-fuel rocket
  • Specialized
1 5.3

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

fuel for success
  • Informal
1 4.2

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

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

How Energy-Dense

hydrogen
  • Specialized
167 3.1
gasoline
  • US
89 1.6
fuel
∞ 1.0
to coal
  • Archaic
1 8.1
wood
685 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.