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

Recent Examples on the Web
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Hendon repurposed an electrochemical tool called a potentiostat, typically used to test battery and fuel cell performance. ArsTechnica, 28 Apr. 2026 Instead of relying solely on batteries, the fuel cell generated electricity onboard during the mission. Georgina Jedikovska, Interesting Engineering, 27 Apr. 2026 Hyperscalers can build their own solar farms, natural gas turbines, fuel cell servers, or battery storage systems on site, reducing load placed on the grid. Big Think, 22 Apr. 2026 Bloom relies on modular fuel cells that can be used to scale up a data center more quickly than relying on gas turbines alone, which can take months or years to put in place due to supply chain delays. Bloomberg, Mercury News, 14 Apr. 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 6 May. 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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