zinc oxide

noun

: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Saie Slip Tint Moisturizer with SPF 35 The Saie Slip Tint uses ingredients like hyaluronic acid to hydrate the skin, licorice root extract to brighten the complexion, and 100 percent mineral non-nano zinc oxide to shield it from sun damage, per the brand. Clara McMahon, PEOPLE, 30 May 2026 Addae is developing zinc oxide sunscreens that don’t leave as much of a white pallor by changing the shape of the chemical’s particle structure, an advancement which may be particularly beneficial for people with darker skin tones. Jackie Flynn Mogensen, Scientific American, 25 May 2026 Made with 20 percent non-nano zinc oxide, squalene, glycerin and sea buckthorn oil, the product simplifies the skin and body routine, eliminating the need for serums, lotions and oils. Kaleigh Werner, Footwear News, 23 May 2026 The newer version bumps protection up to SPF 50 and pairs zinc oxide with titanium dioxide, two mineral filters that work together to broaden UV coverage while maintaining that barely-there feel. Christa Joanna Lee, Allure, 22 May 2026 See All Example Sentences for zinc oxide

Word History

First Known Use

1849, in the meaning defined above

Time Traveler
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 4 Jun. 2026.

Kids Definition

zinc oxide

noun
: a white substance that is used as a white pigment, is added to rubber, and is used in medical and cosmetic preparations (as ointments and sunblocks)

Medical Definition

zinc oxide

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

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