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

For a range of ultraviolet wavelengths, the lens — made of a stack of silver and titanium dioxide layers — has a refractive index of -1, roughly equal and opposite to that of air. Quanta Magazine, "Physicists Close In on ‘Perfect’ Optical Lens," 8 Aug. 2013 The full list of ingredients for the hair vitamins include: glucose syrup, sugar, water, pectin, citric acid, sodium citrate, natural flavors, titanium dioxide, Blue 1, coconut oil, and carnauba wax. Caroline Picard, Good Housekeeping, "Do SugarBearHair Vitamins Really Work? Here's What Our Nutritionist Says," 22 May 2019 Chalkboard paints typically contain talc, titanium dioxide, and silicon dioxide, making for a surface that will hold chalk. Hadley Keller, House Beautiful, "Everything You Need to Know About Chalkboard Paint," 29 Apr. 2019 Start with a few of our faves: Give yourself a quite literal natural glow with this translucent mineral powder formulated with jojoba, titanium dioxide, and witch hazel extract. Leah Prinzivalli, Allure, "Whole Foods' Annual Beauty Week Event Has Arrived and Every Product Is on Sale," 12 Mar. 2019 The new announcement proposes that: Only two ingredients – zinc oxide and titanium dioxide – are generally recognized safe and effective. Caroline Picard, Good Housekeeping, "What the New Proposed FDA Sunscreen Regulations Mean for You," 22 Feb. 2019 Only physical sunscreens with the active ingredients zinc oxide or titanium dioxide are recognized as generally safe right now. Caroline Picard, Good Housekeeping, "What the New Proposed FDA Sunscreen Regulations Mean for You," 22 Feb. 2019 Preferably the sunscreen should contain physical blockers such as zinc and/or titanium dioxide and an SPF of at least 30. Lauren Valenti, Marie Claire, "The 10 Best Eye Creams for Every Age," 14 Mar. 2017 Others rely on broad-spectrum coverage provided by compounds like zinc oxide or titanium dioxide. Evelyn Crowley, Vogue, "The 6 Biggest Skincare Breakthroughs of 2018," 19 Dec. 2018

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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Statistics for titanium dioxide

Last Updated

24 Jun 2019

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Time Traveler for titanium dioxide

The first known use of titanium dioxide was in 1877

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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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