hydrogen ion
noun
1
: the cation H+ of acids consisting of a hydrogen atom whose electron has been transferred to the anion of the acid
2
Examples of hydrogen ion in a Sentence
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Since the 1880s, human activities have increased the ocean’s concentration of acidic hydrogen ions by more than 26 percent.
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Lauren Leffer, Popular Science, 27 Aug. 2025
Because of the angstrom-size pores in the material, the team discovered that UC-MAC was uniquely suited to turning molecular hydrogen ions into protons.
—IEEE Spectrum, 18 Aug. 2025
The team’s success comes from re-engineering the fuel cell’s electrolyte, the ceramic layer that transports protons (hydrogen ions) to generate electricity.
—Aman Tripathi, Interesting Engineering, 10 Aug. 2025
Lunar water may have also originated from solar wind implantation, in which hydrogen ions in solar wind hit the Moon and generate OH or H20 in the soil.
—Jack Knudson, Discover Magazine, 17 July 2025
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Lauren Leffer, Popular Science, 27 Aug. 2025
Because of the angstrom-size pores in the material, the team discovered that UC-MAC was uniquely suited to turning molecular hydrogen ions into protons.
—IEEE Spectrum, 18 Aug. 2025
The team’s success comes from re-engineering the fuel cell’s electrolyte, the ceramic layer that transports protons (hydrogen ions) to generate electricity.
—Aman Tripathi, Interesting Engineering, 10 Aug. 2025
Lunar water may have also originated from solar wind implantation, in which hydrogen ions in solar wind hit the Moon and generate OH or H20 in the soil.
—Jack Knudson, Discover Magazine, 17 July 2025
See All Example Sentences for hydrogen ion
Cite this Entry
“Hydrogen ion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20ion. Accessed 10 Sep. 2025.
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