hydroxide

noun
hy·​drox·​ide | \ hī-ˈdräk-ˌsīd How to pronounce hydroxide (audio) \

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

With carbon dioxide in the Lunar Module reaching a dangerous level, the crew had to adapt lithium hydroxide canisters designed for the Command Module to work in the Lunar Module. Fox News, "Apollo 13 astronaut Fred Haise recounts ill-fated mission: 'We never got to the edge of the cliff'," 13 July 2019 The foam core acts a conductor, and the nickel-iron hydroxide starts the electrolysis. David Grossman, Popular Mechanics, "Scientists Are Now Transforming Saltwater Into Hydrogen Fuel," 20 Mar. 2019 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

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

22 Jul 2019

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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 How to pronounce hydroxide (audio) \

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

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