Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “fuel”

fuel

noun uk   /fjʊəl/ us  
B1 [C or U] a substance that is used to provide heat or power, usually by being burned: Wood, coal, oil, petrol and gas are all different kinds of fuel. Plutonium is a fuel used to produce nuclear energy. nuclear fuel unleaded fuel The new exhaust system, it is claimed, will lower fuel consumption. [U] anything that keeps people's ideas or feelings active, or makes them stronger: Reports in today's newspapers have added fuel to the controversy (= made it worse).

fuel

verb [T] uk   /fjʊəl/ (-ll- or US usually -l-) us  
to supply a system with a substance that can be burned to provide heat or power: Our heating is fuelled by gas. We have a gas-fuelled heating system. petrol/hydrogen-fuelled cars Something that fuels a feeling or a type of behaviour increases it or makes it stronger: The rapid promotion of the director's son has itself fuelled resentment within the company. The prime minister's speech fuelled speculation that she is about to resign.
(Definition of fuel from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of fuel?
Add Cambridge dictionaries to your browser to your website

Definitions of “fuel” in other dictionaries

Word of the Day

look on the bright side

to find good things in a bad situation

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More