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gray hydrogen

or grey hy·dro·gen

[ grey hahy-druh-juhn ]

noun

  1. hydrogen that is produced by heating a hydrocarbon, especially natural gas, with steam, resulting in the release of carbon dioxide into the atmosphere. Compare blue hydrogen ( def ), green hydrogen ( def ).


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Word History and Origins

Origin of gray hydrogen1

First recorded in 2015–20

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grayhoundgray iron