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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Since last year, when its onsite fuel cells began being ordered furiously for data centers, Bloom has seen its shares shoot up over 500% and the company reached a market cap above $30 billion. Krysta Escobar, CNBC, 17 Jan. 2026 The backpack-sized system uses compact hydrogen fuel cells to deliver long-lasting, stable power for applications where charging infrastructure is limited or unavailable. Neetika Walter, Interesting Engineering, 10 Jan. 2026 In laboratory tests, the MIT sodium-air fuel cell prototype delivered more than five times as much energy per kilogram as the lithium-ion batteries currently used in electric cars. The Week Uk, TheWeek, 30 Dec. 2025 The district received $29,330,243 from the FTA in 2023 to purchase 23 zero-emission, hydrogen fuel cell electric buses. Phil Diehl, San Diego Union-Tribune, 24 Nov. 2025 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 24 Jan. 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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