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
Recent Examples on the Web
Highly acidic foods donate hydrogen ions that react with and break down these long chain polymers called plastic.
—
Taylor Tobin, Southern Living, 5 Feb. 2026
On Saturday, the China Institute of Atomic Energy announced the creation of the country’s first high-energy hydrogen ion implanter, named the POWER-750H, claiming its performance matches leading international standards.
—Bojan Stojkovski, Interesting Engineering, 19 Jan. 2026
Since the 1880s, human activities have increased the ocean’s concentration of acidic hydrogen ions by more than 26 percent.
—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
See All Example Sentences for hydrogen ion
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Taylor Tobin, Southern Living, 5 Feb. 2026
On Saturday, the China Institute of Atomic Energy announced the creation of the country’s first high-energy hydrogen ion implanter, named the POWER-750H, claiming its performance matches leading international standards.
—Bojan Stojkovski, Interesting Engineering, 19 Jan. 2026
Since the 1880s, human activities have increased the ocean’s concentration of acidic hydrogen ions by more than 26 percent.
—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
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 14 Feb. 2026.
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