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green hydrogen

noun

: hydrogen that is produced by splitting water into its two components of hydrogen and oxygen using a renewable energy source (such as wind or solar)

Word History

First Known Use

2002, in the meaning defined above

Time Traveler
The first known use of green hydrogen was in 2002

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Cite this Entry

“Green hydrogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/green%20hydrogen. Accessed 27 Nov. 2025.

Last Updated: - Entry added
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