hydroxide

noun
hy·​drox·​ide | \ hī-ˈdräk-ˌsīd \

Definition of hydroxide

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

Given a higher pH and lack of oxygen, the researchers measured the precipitation of bits of an iron hydroxide mineral that would turn into magnetite within a few days. Scott K. Johnson, Ars Technica, "The secret to Mars’ past warmth could be beneath Curiosity’s wheels," 9 Aug. 2018 Water can act as either an acid or a base filled with both hydrogen and hydroxide ions. David Grossman, Popular Mechanics, "A New Hydrophobic Surface Could Turn the Ocean's Waves Into Electricity," 4 Oct. 2018 Adding the hydroxide to water allows it to take up CO2 from the air, turning it into bicarbonate. Scott K. Johnson, Ars Technica, "Splitting water for fuel while removing CO₂ from the air," 28 June 2018 If there are an equal number of hydrogen and hydroxide ions present, the acid and base will neutralize each other, forming a salt and water. Megan Arnett, Scientific American, "Sweet and Sour Science You Can Taste!," 21 June 2018 For example, one method uses special membrane filters to separate the hydrogen and hydroxide ions produced during electrolysis. Scott K. Johnson, Ars Technica, "Splitting water for fuel while removing CO₂ from the air," 28 June 2018 But instead of cooling the water, the goal here is to get air in contact with the potassium dissolved in the water, which forsakes its hydroxide partner to grab molecules of CO2. Scott K. Johnson, Ars Technica, "Machines that suck CO₂ from the air might be cheaper than we thought," 7 June 2018 Climeworks, along with other atmospheric CCS startups like Global Thermostat and Carbon Engineering, use compounds like amines or hydroxides to capture CO2. Avery Thompson, Popular Mechanics, "What Is Carbon Capture?," 13 Apr. 2018 Under the accord, GEM and its subsidiaries will lock in 13,800 metric tons of cobalt contained in hydroxide from Glencore this year. Mark Burton, Bloomberg.com, "China Leaving West Behind in Race for Electric-Car Raw Materials," 14 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydroxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hydroxide

1851, in the meaning defined at sense 1

History and Etymology for hydroxide

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Last Updated

23 Dec 2018

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Time Traveler for hydroxide

The first known use of hydroxide was in 1851

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More Definitions for hydroxide

hydroxide

noun
hy·​drox·​ide | \ hī-ˈdräk-ˌsīd \

Medical Definition of hydroxide

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

More from Merriam-Webster on hydroxide

Nglish: Translation of hydroxide for Spanish Speakers

Britannica.com: Encyclopedia article about hydroxide

Comments on hydroxide

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