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titanium dioxide
noun
: an oxide TiO2 of titanium that occurs in rutile, anatase, and ilmenite and is used especially as a pigment
Examples of titanium dioxide in a Sentence
Recent Examples on the Web
Only two sunscreen ingredients — zinc oxide and titanium dioxide — would be able to keep their decades-old approvals under that proposal.
—Alexander Tin, CBS News, 2 Oct. 2024
Active ingredients: Zinc oxide, titanium dioxide / SPF: 30 / Size: 3.2 fl. oz.
—Danielle Sinay, Glamour, 13 Aug. 2024
For instance, mineral sunscreens (or physical sunscreens) primarily contain titanium dioxide, zinc oxide.
—Sherri Gordon, Health, 6 Aug. 2024
This sunscreen guards against sun damage with the help of mineral UV blockers, titanium dioxide, and zinc oxide while antioxidant-rich plankton extract protects delicate skin against environmental aggressors.
—Jennifer Hussein, Allure, 18 Aug. 2024
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Word History
First Known Use
1877, in the meaning defined above
Dictionary Entries Near titanium dioxide
Cite this Entry
“Titanium dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/titanium%20dioxide. Accessed 30 Nov. 2024.
Medical Definition
titanium dioxide
noun
: an oxide TiO2 of titanium that is used especially as a pigment and in sunblocks
More from Merriam-Webster on titanium dioxide
Britannica.com: Encyclopedia article about titanium dioxide
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