From Longman Dictionary of Contemporary Englishfuel cellˈfuel cell noun [countable] a piece of equipment that combines two different elements, such as oxygen and hydrogen, to produce electricity in order to supply power to a vehicle or machine
Examples from the Corpus
fuel cell• The newly-developed fuel cell will be powered by hydrogen, extracted from water.• It is based on fuel cell technology, which, like conventional batteries, uses electrochemical reactions to generate power.• The fuel cell car is a totally different vehicle. 