hydroxide
noun
hy·drox·ide
hī-ˈdräk-ˌsīd 
1
: the monovalent anion OH− consisting of one atom of hydrogen and one of oxygen
called also hydroxide ion
2
: an ionic compound of hydroxide with an element or group
Examples of hydroxide in a Sentence
Recent Examples on the Web
Antacids generally contain aluminum hydroxide, calcium carbonate, sodium bicarbonate, or bismuth subsalicylate.
—
Ann Pietrangelo, Verywell Health, 4 Sep. 2025
These molecules generate hydroxide ions that can efficiently capture and release CO₂ from the air.
—Neetika Walter, Interesting Engineering, 4 Sep. 2025
The new high-pressure acid leaching smelter will produce 66,000 tons of nickel in mixed hydroxide precipitate each year when completed, using nickel ore from Vale Indonesia’s mines.
—Yessar Rosendar, Forbes.com, 28 Aug. 2025
In November, post-perihelion, Noonan will use Hubble to study 3I/ATLAS and its emissions, looking for signs of substances such as hydroxide and hydrogen that can help clarify its composition.
—Jonathan O'Callaghan, Scientific American, 16 July 2025
See All Example Sentences for hydroxide
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Ann Pietrangelo, Verywell Health, 4 Sep. 2025
These molecules generate hydroxide ions that can efficiently capture and release CO₂ from the air.
—Neetika Walter, Interesting Engineering, 4 Sep. 2025
The new high-pressure acid leaching smelter will produce 66,000 tons of nickel in mixed hydroxide precipitate each year when completed, using nickel ore from Vale Indonesia’s mines.
—Yessar Rosendar, Forbes.com, 28 Aug. 2025
In November, post-perihelion, Noonan will use Hubble to study 3I/ATLAS and its emissions, looking for signs of substances such as hydroxide and hydrogen that can help clarify its composition.
—Jonathan O'Callaghan, Scientific American, 16 July 2025
See All Example Sentences for hydroxide
Cite this Entry
“Hydroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydroxide. Accessed 31 Oct. 2025.
Copy CitationKids Definition
hydroxide
noun
hy·drox·ide
hī-ˈdräk-ˌsīd
: a negatively charged ion consisting of one atom of oxygen and one atom of hydrogen
Medical Definition
hydroxide
noun
hy·drox·ide
hī-ˈdräk-ˌsīd
1
: the monovalent anion OH− consisting of one atom of hydrogen and one of oxygen
called also hydroxide ion
2
: an ionic compound of hydroxide with an element or group
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