titanium dioxide


Definition of titanium dioxide

: 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 Unlike other white paints on the market, which use titanium dioxide to reflect up to 88% of rays, the Purdue formula uses a high concentration of barium sulfate to reflect 98.1% of sunlight. Lindsey Mcginnis, The Christian Science Monitor, 17 Dec. 2021 Paint manufacturers are struggling with titanium dioxide. Chris Isidore, CNN, 28 Sep. 2021 Mineral sunscreens work as a shield, blocking the sun's rays from penetrating the skin, thanks to ingredients like zinc oxide or titanium dioxide. Rebecca Dance, Allure, 20 Aug. 2021 The combination of Teflon reflecting UV and titanium dioxide reflecting other wavelengths means that metafabric reflects nearly all sunlight. Jess Craig, Wired, 23 Aug. 2021 Metafabric is made from a synthetic fiber coated in polytetrafluoroethylene (commonly known by the brand name Teflon) and contains tiny nanoparticles of titanium dioxide, the same metal used in sunscreen. Jess Craig, Wired, 23 Aug. 2021 The simple ingredient list is ideal for those who experience breakouts from titanium dioxide. Bea Mcmonagle, Forbes, 29 May 2021 Experts still advocate for regular sunscreen use, citing zinc oxide and titanium dioxide as two of the safest and most effective actives. Zee Krstic, Good Housekeeping, 11 Aug. 2021 Physical formulas use minerals—typically zinc or titanium dioxide—to create a physical barrier against the sun’s rays, while the latter use chemicals such as oxybenzone, avobenzone, octinoxate and homosalate to absorb UV light. Jamie Ducharme, Time, 2 Aug. 2021

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

1877, in the meaning defined above

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Time Traveler for titanium dioxide

Time Traveler

The first known use of titanium dioxide was in 1877

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Dictionary Entries Near titanium dioxide

titanium carbide

titanium dioxide

titanium oxide

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Statistics for titanium dioxide

Last Updated

24 Dec 2021

Cite this Entry

“Titanium dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/titanium%20dioxide. Accessed 28 Jan. 2022.

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More Definitions for titanium dioxide

titanium dioxide


Medical Definition of titanium dioxide

: 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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