fuel cell

noun

: a device that continuously changes the chemical energy of a fuel (such as hydrogen) and an oxidant directly into electrical energy

Examples of fuel cell in a Sentence

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Inside the vehicle, a fuel cell combines hydrogen with oxygen to produce electricity. Atharva Gosavi, Interesting Engineering, 16 June 2026 This seemingly futuristic idea drew on his Navy experience with water-splitting electrolyzers, which supplied the oxygen that enabled subs to remain submerged for months at a time, and NASA’s use of hydrogen fuel cells to power the Apollo missions. IEEE Spectrum, 15 June 2026 Those fuel cells run continuously, consuming between 7,500 and 8,000 kg (16,535 and 17,637 lb) of hydrogen per week, slowly charging a 45-MWh onboard battery bank. Omar Kardoudi june 09, New Atlas, 9 June 2026 Cities around the world are using hydrogen fuel cells, wind power, and hydrofoil boats to move commuters, tourists, and residents across their waterways. Jaclyn Trop, Wired News, 5 June 2026 See All Example Sentences for fuel cell

Word History

First Known Use

1922, in the meaning defined above

Time Traveler
The first known use of fuel cell was in 1922

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Cite this Entry

“Fuel cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fuel%20cell. Accessed 23 Jun. 2026.

Kids Definition

fuel cell

noun
: a device that continuously changes the chemical energy of a fuel (as hydrogen) into electrical energy

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