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 The formula boasts titanium dioxide, which helps with broad spectrum protection, while zinc oxide offers a physical barrier from UVA rays. Sophie Dodd, Peoplemag, 7 Jan. 2024 To stay sun-safe without exacerbating eczema symptoms, look for physical sunscreens (also called mineral sunscreens), which contain ingredients such as titanium dioxide and zinc oxide that work by deflecting UV rays. Karen Pallarito, Health, 18 Dec. 2023 Mineral sunscreens are not carbon-based and include two compounds: titanium dioxide and zinc oxide. Sam Jones, Scientific American, 6 Sep. 2023 SPFs with zinc oxide or titanium dioxide are considered mineral sunscreens, a popular alternative to chemical formulas. Catharine Malzahn, goodhousekeeping.com, 20 Apr. 2023 Mineral sunscreen has ingredients like zinc or titanium dioxide that can be better suited for sensitive or acne-prone skin. Anna Popp, Travel + Leisure, 28 Feb. 2023 Combined with the trap’s UV light, the titanium dioxide coating produces a carbon dioxide trail that impersonates human breath to lure flying insects to the trap. Kate Oczypok, Better Homes & Gardens, 4 Oct. 2023 Notably, though, titanium dioxide was left out of the final version of the California Food Safety Act that was signed into law.1 Other measures are starting to slowly pick up here in the United States. Emily Nadal, Parents, 23 Oct. 2023 But as bill author Assemblyman Jesse Gabriel (D-Woodland Hills) noted to The Times, Skittles are sold using alternative ingredients in Europe and other places where titanium dioxide has already been banned. Christian Martinez, Los Angeles Times, 14 Oct. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'titanium dioxide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1877, in the meaning defined above

Time Traveler
The first known use of titanium dioxide was in 1877

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 3 Mar. 2024.

Medical Definition

titanium dioxide

: an oxide TiO2 of titanium that is used especially as a pigment and in sunblocks

More from Merriam-Webster on titanium dioxide

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