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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
The hydrogen ions, however, go on to help create ATP and NADPH, molecules that provide energy and electrons for the next stage.
—Cody Cottier, Discover Magazine, 4 Nov. 2024
Then the breakdown of muscle glycogen that produces energy also results in the making of lactate plus a hydrogen ion.
—Kristen Rogers, CNN, 9 Aug. 2024
The lower this number is, the more hydrogen ions there are and the more acidic the environment is.
—Sara Hoffman, Pharmd, Verywell Health, 2 July 2024
Antacids contain earth metals, including calcium, sodium, magnesium, and aluminum, that react with hydrogen ions to help neutralize stomach acid.
—Sara Hoffman, Pharmd, Verywell Health, 2 July 2024
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Word History
First Known Use
1896, in the meaning defined at sense 1
Dictionary Entries Near hydrogen ion
Cite this Entry
“Hydrogen ion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20ion. Accessed 21 Nov. 2024.
Kids Definition
hydrogen ion
noun
: the positive ion of acids that consists of a hydrogen atom whose electron has been transferred to the negative ion of the acid
Medical Definition
hydrogen ion
noun1
: the cation H+ of acids consisting of a hydrogen atom whose electron has been transferred to the anion of the acid
2
More from Merriam-Webster on hydrogen ion
Britannica.com: Encyclopedia article about hydrogen ion
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