zinc oxide


Definition of zinc oxide

: an infusible white solid ZnO used especially as a pigment, in compounding rubber, and in pharmaceutical and cosmetic preparations (such as ointments and sunblocks)

Examples of zinc oxide in a Sentence

Recent Examples on the Web In fact, zinc oxide is the magic ingredient that has some people swearing diaper cream is their go-to acne treatment. Macaela Mackenzie, Allure, "Does Zinc for Acne Really Work? Dermatologists Weigh In," 18 Sep. 2018 Travelers instead may use reef-safe sunscreens made with minerals such as zinc oxide and titanium dioxide (here’s a list of hundreds of coral-safe sunscreens to try). Los Angeles Times, "U.S. Virgin Islands’ ban on harmful sunscreens to go into effect Jan. 1," 28 Aug. 2019 Nintendo will partner with Sharp to put the company's IGZO (indium gallium zinc oxide) displays in the Switch, according to a report from the Wall Street Journal. Kyle Orland, Ars Technica, "What Sharp’s IGZO display technology will mean for the Nintendo Switch," 8 Aug. 2019 Out are summers spent perched on a lifeguard chair slathered in zinc oxide, schlepping clubs on fairways or stacking boxes in a warehouse. Robert Channick, chicagotribune.com, "High school students shunning character-building summer jobs for classes, academic camps and resume-worthy activities," 25 July 2019 Decades ago, the sunscreens that Americans were dabbing on their noses were often mineral concoctions, like zinc oxide and titanium dioxide, that sat on the skin in a thick white cream and physically blocked the sun’s rays. Kim Tingley, New York Times, "When You Wear Sunscreen, You’re Taking Part in a Safety Study," 23 July 2019 Those chemical reactions are reversible, unlike the formation of zinc oxide, which is what lets the electrons and the lithium ions flow back and forth over many cycles of charging and discharging. Robert Masse, The Conversation, "How do lithium-ion batteries work?," 15 July 2019 Physical sunscreens contain mineral ingredients—like titanium dioxide or zinc oxide—and sit on top of the skin to deflect and distribute damaging UVA and UVB rays away from the skin. Susan Brickell, Health.com, "What Does SPF Stand For? We Asked Dermatologists," 21 June 2019 Instead, opt for SPF options that feature natural minerals like zinc oxide. Diana Nguyen, Harper's BAZAAR, "A Dermatologist’s Summer Skincare Plan," 7 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'zinc oxide.' 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 zinc oxide

1849, in the meaning defined above

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The first known use of zinc oxide was in 1849

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Cite this Entry

“Zinc oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zinc%20oxide. Accessed 29 Mar. 2020.

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More Definitions for zinc oxide

zinc oxide


Medical Definition of zinc oxide

: a white solid ZnO used in pharmaceutical and cosmetic preparations (as ointments and powders)

More from Merriam-Webster on zinc oxide

Britannica.com: Encyclopedia article about zinc oxide

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