fuel cell

noun
a device that produces a continuous electric current directly from the oxidation of a fuel, as that of hydrogen by oxygen.

Origin:
1920–25

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Collins
World English Dictionary
fuel cell
 
n
a cell in which the energy produced by oxidation of a fuel is converted directly into electrical energy

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
fuel cell  
A device that produces electricity by combining a fuel, usually hydrogen, with oxygen. In this reaction, electrons are freed from the hydrogen in the fuel cell by a catalyst, and gain energy from the chemical reaction binding hydrogen and oxygen; this provides a source for electric current. The exhaust of hydrogen fuel cells consists simply of water. Fuel cells are currently used in spacecraft, and increasingly in ground transportation, with potential use everywhere electricity is required.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

fuel cell definition


An electrochemical device where a chemical reaction produces energy that is converted directly into electricity. Once used primarily in space travel, fuel cells are now being considered for use in cars. Unlike internal-combustion engines, fuel cells do not pollute the environment.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Scientists have invented a new platinum alloy that may help fuel cell
  technology over its price hump.
Instead of a gasoline tank, fuel cell vehicles include a pressurized tank of
  hydrogen gas.
Recombining the gases in a fuel cell would yield electricity again.
In general, solar electric, solar water heating and fuel cell property qualify
  for this credit.
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